Longitudinal assessment (1995-2003) of hospitalizations of HIV-infected patients within a geographical population in Canada

Prevalence and determinants of opportunistic infections among HIV-infected adults receiving antiretroviral therapy in Ethiopia: A systematic review and meta-analysis

Background

Reliable data on the burden of opportunistic infections (OIs) after the initiation of antiretroviral therapy (ART) is critical for planning health services and reducing OI-related morbidity and mortality. Nevertheless, there has been no nationally representative information on the prevalence of OIs in our country. Therefore, we have undertaken this comprehensive systematic review and meta-analysis to estimate the pooled prevalence, and identify factors associated with the development of OIs in Human Immunodeficiency Virus (HIV)-infected adults receiving ART in Ethiopia.

Methods

Articles were searched in international electronic databases. A standardized Microsoft Excel spreadsheet and STATA software version 16 were used for data extraction and analysis, respectively. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) checklist was used to write this report. The random-effect meta-analysis model was used to estimate the pooled effect. The statistical heterogeneity of the meta-analysis was checked. Subgroup and sensitivity analyses were also performed. Publication bias was examined in funnel plots and the nonparametric rank correlation test of Begg and the regression-based test of Egger. Association was expressed through a pooled odds ratio (OR) with a 95% Confidence Interval (CI).

Results

A total of 12 studies with 6,163 study participants were included. The pooled prevalence of OIs was 43.97% [95% CI (38.59, 49.34)]. Poor adherence to ART [OR, 5.90, 95% CI (3.05, 11.40)], under nutrition [OR, 3.70, 95% CI (2.01, 6.80)], CD4 T lymphocyte count <200 cells /μL [OR, 3.23 95% CI (2.06, 5.07)], and advanced World Health Organization (WHO) HIV clinical stages [OR, 4.84 95% CI (1.83, 12.82)] were determinants of OIs.

Conclusion

The pooled prevalence of OIs among adults taking ART is high. Poor adherence to ART, under nutrition, a CD4 T lymphocyte count <200 cells /μL, and advanced WHO HIV clinical stages were factors associated with the development of OIs.

Incidence and predictors of opportunistic infections in adolescents and adults after the initiation of antiretroviral therapy: A 10-year retrospective cohort study in Ethiopia

Background

Opportunistic infections (OIs) are the leading cause of morbidity and mortality in people living with the human immunodeficiency virus (PLHIV). However, there are few robust recent data on the rates of OIs and the risk factors that contribute to their occurrence. Therefore, the current study sought to determine the incidence of OIs and identify predictors among adolescents and adults after the initiation of antiretroviral therapy (ART) at Wolaita Sodo University Comprehensive Specialized Hospital (WSUCSH), Southern Ethiopia.

Methods

A retrospective cohort study design was employed. The study population was adolescents and adults who initiated ART between 1 January 2012 and 31 December 2021. A simple random sampling technique was used to select 537 participants' records. We reviewed the medical records of the sampled individuals from 1 May 2022 to 15 June 2022. KoboCollect version 2021.2.4 and STATA version 14.0 software were used for data collection and analysis, respectively. We calculated the incidence rate per 100 person-years of observation (PYO) with 95% confidence intervals (CIs) for the occurrence of any OIs. The Weibull regression model was fitted after the goodness-of-fit test for the Cox proportional hazard model was deemed inadequate. An adjusted hazard ratio (AHR) with 95% CI was used to identify a significant predictor of OIs. The statistical significance was made at a 5% significance level.

Results

A total of 515 participants contributed to 1,829 person-years of risk, of whom 164 (31.84%) exhibited at least one OI. The overall incidence rate of OIs was 8.97 cases (95% CI: 7.69, 10.44) per 100 PYO. The independent predictors of OIs were being female [AHR: 1.65 (95% CI (1.15, 2.36), P = 0.007)], individuals classified as World Health Organization (WHO) HIV clinical stage III [AHR: 1.98 (95% CI (1.12, 3.51), P = 0.019)], individuals who did not take cotrimoxazole preventive therapy (CPT) [AHR: 2.58 (95% CI (1.62, 4.11), P < 0.001)], mild malnutrition [AHR: 1.62 (95% CI (1.06, 2.54), P = 0.035)], and poor adherence to ART [AHR: 4.21 (95% CI (2.39, 7.44), P < 0.001)].

Conclusion

The rate of OIs after the initiation of ART was still high. Moreover, being female, not taking CPT, poor adherence to ART, mild malnutrition, and advanced HIV disease at presentation were found to increase the hazards of developing OIs.

Racial, ethnic, and gender disparities in hospitalizations among persons with HIV in the United States and Canada, 2005-2015

OBJECTIVE

To examine recent trends and differences in all-cause and cause-specific hospitalization rates by race, ethnicity, and gender among persons with HIV (PWH) in the United States and Canada.

DESIGN

HIV clinical cohort consortium.

METHODS

We followed PWH at least 18 years old in care 2005-2015 in six clinical cohorts. We used modified Clinical Classifications Software to categorize hospital discharge diagnoses. Incidence rate ratios (IRR) were estimated using Poisson regression with robust variances to compare racial and ethnic groups, stratified by gender, adjusted for cohort, calendar year, injection drug use history, and annually updated age, CD4+, and HIV viral load.

RESULTS

Among 27 085 patients (122 566 person-years), 80% were cisgender men, 1% transgender, 43% White, 33% Black, 17% Hispanic of any race, and 1% Indigenous. Unadjusted all-cause hospitalization rates were higher for Black [IRR 1.46, 95% confidence interval (CI) 1.32-1.61] and Indigenous (1.99, 1.44-2.74) versus White cisgender men, and for Indigenous versus White cisgender women (2.55, 1.68-3.89). Unadjusted AIDS-related hospitalization rates were also higher for Black, Hispanic, and Indigenous versus White cisgender men (all P < 0.05). Transgender patients had 1.50 times (1.05-2.14) and cisgender women 1.37 times (1.26-1.48) the unadjusted hospitalization rate of cisgender men. In adjusted analyses, among both cisgender men and women, Black patients had higher rates of cardiovascular and renal/genitourinary hospitalizations compared to Whites (all P < 0.05).

CONCLUSION

Black, Hispanic, Indigenous, women, and transgender PWH in the United States and Canada experienced substantially higher hospitalization rates than White patients and cisgender men, respectively. Disparities likely have several causes, including differences in virologic suppression and chronic conditions such as diabetes and renal disease.

Causes of Hospitalization and Death among Newly Diagnosed HIV-Infected Adults in Thailand

More than half of newly diagnosed HIV-infected patients enter to care with a low CD4 count. A retrospective cohort study was conducted among newly diagnosed HIV-infected adults who were hospitalized. Of 148 patients, median (interquartile range [IQR]) age was 39.3 (30.5-47.1) years and 114 (77%) patients were male. Baseline median (IQR) CD4 count was 79 (24-218) cells/mm³. The median (IQR) length of hospital stay was 8 (4-16) days. Half of the patients were hospitalized with AIDS-defining illness (ADI). Common opportunistic infections were Pneumocystis jirovecii pneumonia (20.3%) and tuberculosis (18.9%). CD4 count was statistically significantly associated with hospitalization with ADI (odds ratio: 0.85, per 10 cells/mm³ increased; 95% confidence interval: 0.80-0.90). The mortality was 5.4%. In conclusion, half of newly diagnosed Thai HIV-infected patients were hospitalized with ADI. Early detection of HIV infection leading to early antiretroviral therapy initiation and prevention of serious complications is essential.

Hospitalization Rates and Outcomes Among Persons Living With Human Immunodeficiency Virus in the Southeastern United States, 1996-2016

BACKGROUND

Antiretroviral therapy (ART) advances, aging, and comorbidities impact hospitalizations in human immunodeficiency virus (HIV)-positive populations. We examined temporal trends and patient characteristics associated with hospitalization rates and outcomes.

METHODS

Among patients in the University of North Carolina Center for AIDS Research HIV Clinical Cohort receiving care during 1996-2016, we estimated annual hospitalization rates, time to inpatient mortality or live discharge, and 30-day readmission risk using bivariable Poisson, Fine-Gray, and log-binomial regression models.

RESULTS

The 4323 included patients (29% women, 60% African American) contributed 30 007 person-years. Overall, the hospitalization rate per 100 person-years was 34.3 (95% confidence interval [CI], 32.4-36.4) with a mean annual change of -3% (95% CI, -4% to -2%). Patients who were black (vs white), older, had HIV RNA >400 copies/mL, or had CD4 count <200 cells/μL had higher hospitalization rates (all P < .05). Thirty-day readmission risk was 18.9% (95% CI, 17.7%-20.2%), stable over time (P > .05 for both 2010-2016 and 2003-2009 vs 1996-2002), and higher among black patients, those with detectable HIV RNA, and those with lower CD4 cell counts (all P < .05). Higher inpatient mortality was associated with older age and lower CD4 cell count (both P < .05).

CONCLUSIONS

Hospitalization rates decreased from 1996 to 2016, but high readmissions persisted. Older patients, those of minority race/ethnicity, and those with uncontrolled HIV experienced higher rates and worse hospitalization outcomes. These findings underscore the importance of early ART and care engagement, particularly at hospital discharge.

Predictors of prolonged hospital stay in HIV-positive patients presenting to the emergency department

BACKGROUND

Prolonged hospitalization places a significant burden on healthcare resources. Compared to the general population, hospital length of stay (LOS) is generally longer in HIV-positive patients. We identified predictors of prolonged hospital length of stay (LOS) in HIV-positive patients presenting to an emergency department (ED).

METHODS

In this cross-sectional study, HIV-positive patients presenting to the Charlotte Maxeke Johannesburg Academic Hospital adult ED were prospectively enrolled between 07 July 2017 and 18 October 2018. Data was subjected to univariate and multivariate logistic regression to determine parameters associated with a higher likelihood of prolonged hospital LOS, defined as ≥7 days.

RESULTS

Among the 1224 participants that were enrolled, the median (IQR) LOS was 4.6 (2.6-8.2) days, while the mean (SD) LOS was 6.9 (8.2) days. On multivariate analysis of the data, hemoglobin <11 g/dL (OR 1.37, p = 0.032), Glasgow coma scale (GCS) <15 (OR 1.80, p = 0.001), creatinine >120 μmol/L (OR 1.85, p = 0.000), cryptococcal meningitis (OR 2.45, p = 0.015) and bacterial meningitis (OR 4.83, p = 0.002) were significantly associated with a higher likelihood of LOS ≥7 days, while bacterial pneumonia (OR 0.35, p = 0.000) and acute gastroenteritis (OR 0.40, p = 0.025) were significantly associated with a lower likelihood of LOS ≥7 days.

CONCLUSION

Various clinical and laboratory parameters are useful in predicting prolonged hospitalization among HIV-positive patients presenting to the ED. These parameters may be useful in guiding clinical decision making and directing the allocation of resources.

Independent Risk Factors for Deaths due to AIDS in Chongqing, China: Does Age Matter?

Background: People living with HIV (PLWH) are aging worldwide, and different management strategies may be required for older and younger PLWH. However, demographic characteristics, illness distribution, mortality, and independent risk factors in the PLWH population in China are not yet fully understood, especially in patients aged 50 years or older.

Methods: We conducted a retrospective analysis of 4445 HIV-positive Chinese inpatients in Chongqing, China.

Results: The mortality rate in patients 50 years or older (the older group) was significantly higher than that in those under 50 years (the younger group) (p < 0.001). In the younger group, independent risk factors for death included: nadir CD4+ T-cell counts <200 cells/μL, not owning medical healthcare insurance, not being on cART, injection drug use, and having one of the following comorbidities: Pneumocystis pneumonia, cryptococcal meningitis, AIDS malignancy, non-AIDS malignancy, and kidney disease. In the older group, independent predictors of death included: being urban residents, nadir CD4+ T-cell counts <200 cells/μL, not being on cART, and having comorbidities such as Pneumocystis pneumonia, hepatitis C, talaromycosis, non-AIDS malignancy, and kidney disease.

Conclusions: Demographic characteristics, illness distribution, mortality, and independent risk factors for death in HIV-positive patients differ between the older group and the younger group, indicating that a changing suite of medical and allied support services may be required the for management of older PLWH.

Hospitalization Rates and Causes Among Persons With HIV in the United States and Canada, 2005-2015

BACKGROUND

To assess the possible impact of antiretroviral therapy improvements, aging, and comorbidities, we examined trends in all-cause and cause-specific hospitalization rates among persons with HIV (PWH) from 2005 to 2015.

METHODS

In 6 clinical cohorts, we followed PWH in care (≥1 outpatient CD4 count or HIV load [VL] every 12 months) and categorized ICD codes of primary discharge diagnoses using modified Clinical Classifications Software. Poisson regression estimated hospitalization rate ratios for calendar time trends, adjusted for demographics, HIV risk factor, and annually updated age, CD4, and VL.

RESULTS

Among 28 057 patients (125 724 person-years), from 2005 to 2015, the median CD4 increased from 389 to 580 cells/µL and virologic suppression from 55% to 85% of patients. Unadjusted all-cause hospitalization rates decreased from 22.3 per 100 person-years in 2005 (95% confidence interval [CI], 20.6-24.1) to 13.0 in 2015 (95% CI, 12.2-14.0). Unadjusted rates decreased for almost all diagnostic categories. Adjusted rates decreased for all-cause, cardiovascular, and AIDS-defining conditions, increased for non-AIDS-defining infection, and were stable for most other categories.

CONCLUSIONS

Among PWH with increasing CD4 counts and viral suppression, unadjusted hospitalization rates decreased for all-cause and most cause-specific hospitalizations, despite the potential effects of aging, comorbidities, and cumulative exposure to HIV and antiretrovirals.

Hospitalization and Predictors of Inpatient Mortality among HIV-Infected Patients in Jimma University Specialized Hospital, Jimma, Ethiopia: Prospective Observational Study

Despite the number of patients enrolled in ART is increased, HIV/AIDS continues to constitute a significant proportion of medical admissions and risk of mortality in low- and middle-income countries. As one of these countries, the case in Ethiopia is not different. The aim of this study was thus to assess reasons for hospitalization, discharge outcomes, and predictors of inpatient mortality among people living with HIV (PLWH) in Jimma University Specialized Hospital (JUSH), Jimma, Southwest Ethiopia. Prospective observational study was conducted in medical wards of JUSH from February 17^th to August 17^th, 2017. In this study, 101 PLWH admitted during the study period were included. To identify the predictors of mortality, multiple logistic regression analysis was employed. Of the 101 hospitalized PLWH, 62 (61.4%) of them were females and most of them (52.5%) were between 25 and 34 years of age. A majority (79.2%) of the study participants were known HIV patients, before their admission. Tuberculosis (24.8%), infections of the nervous system (18.8%), and pneumonia (9.9%) comprised more than half of the reasons for hospitalization. Moreover, drug-related toxicity was a reason for hospitalization of 6 (5.9%) patients. Outcomes of hospitalization indicated that the overall inpatient mortality was 18 (17.8%). The median CD4 cell counts for survivors and deceased patients were 202 cells/μL (IQR, 121–295 cells/μL) and 70 cells/μL (IQR, 42–100 cells/μL), respectively. Neurologic complications (AOR = 13.97; 95% CI: 2.32–84.17, P = 0.004), CD4 count ≤ 100 cells/μl (AOR = 16.40; 95% CI: 2.88–93.42, P = 0.002), and short hospital stay (AOR = 12.98, 95% CI: 2.13–78.97, P = 0.005) were found to be significant predictors of inpatient mortality. In conclusion, opportunistic infections are the main reason of hospitalization in PLWH.

Mortality in Hospitalised HIV/AIDS Patients in a Tertiary Centre in Sub-Saharan Africa: Trends Between 2007 and 2015, Causes and Associated Factors

Background:

With easy accessibility to combination Antiretroviral Therapy (cART), mortality amongst hospitalized HIV/AIDS patients needs to be described.

Objective:

We aimed at determining the trends, causes and factors associated with in-hospital mortality amongst HIV/AIDS patients in the Douala General Hospital.

Methods:

We retrospectively reviewed hospitalisation records of HIV/AIDS patients hospitalized in the medical wards of the DGH from 2007 to 2015. Four cause-of-death categories were defined: 1. Communicable conditions and AIDS-defining malignancies, 2. Chronic non-communicable conditions and non-AIDS defining malignancies’, 3. Other non-communicable conditions and 4. Unknown conditions. Logistic regression was used to determine factors associated mortality.

Results:

We analyzed 891 eligible files. The mean age was 43 (standard deviation (SD): 10) years and median length of hospital stay was 9 (interquatile range (IQR)4 - 15) days. The overall all-cause mortality was 23.5% (95% CI: 20.8% - 26.4%). The category - communicable conditions and AIDS defining malignancies represented 79.9%, of deaths and this remained constant for each year during the study period. Tuberculosis was the most common specific cause of death (23.9%). Patients who had two (OR=2.35, 95%CI: 1.35 - 4.06) and more than two (OR=4.23, 95%CI: 1.62 – 11.12) opportunistic infections, a haemoglobin level less than 10g/l (OR=2.38, 95%CI: 1.58 - 3.59) had increased odds of dying.

Conclusion:

In-hospital mortality is high amongst HIV/AIDS patients at the Douala general hospital. The category - communicable conditions and AIDS defining malignancies - is still the main underlying cause of death. We hope that our findings will help to develop interventions aimed at reducing in-hospital mortality.

Lower health-related quality of life predicts all-cause hospitalization among HIV-infected individuals

BACKGROUND

Health-related quality of life (HRQOL) is a patient-centered outcome measure used in assessing the individual's overall functional health status but studies looking at HRQOL as a predictive tool are few. This work examines whether summary scores of HRQOL are predictive of all-cause hospitalization in the US Military HIV Natural History Study (NHS) cohort.

METHODS

The Short Form 36 (SF-36) was administered between 2006 and 2010 to 1711 NHS cohort members whose hospitalization records we had also obtained. Physical component summary scores (PCSS) and mental component summary scores (MCSS) were computed based on standard algorithms. Terciles of PCSS and MCSS were generated with the upper terciles (higher HRQOL) as referent groups. Proportional hazards multivariate regression models were used to estimate the hazard of hospitalization for PCSS and MCSS separately (models 1 and 2, respectively) and combined (model 3).

RESULTS

The hazard ratios (HR) of hospitalization were respectively 2.12 times (95% CI: 1.59-2.84) and 1.59 times (95% CI: 1.19-2.14) higher for the lower and middle terciles compared to the upper PCSS tercile. The HR of hospitalization was 1.33 times (95% CI: 1.02-1.73) higher for the lower compared to the upper MCSS tercile. Other predictors of hospitalization were CD4 count < 200 cells/mm3 (HR = 2.84, 95% CI: 1.96, 4.12), CD4 count 200-349 cells/mm3 (HR = 1.67, 95% CI: 1.24, 2.26), CD4 count 350-499 cells/mm3 (HR = 1.41, 95% CI: 1.09, 1.83), plasma viral load > 50 copies/mL (HR = 1.82, 95% CI: 1.46, 2.26), and yearly increment in duration of HIV infection (HR = 0.94, 95% CI: 0.93, 0.96) (model 3).

CONCLUSION

After controlling for factors associated with hospitalization among those with HIV, both PCSS and MCSS were predictive of all-cause hospitalization in the NHS cohort. HRQOL assessment using the SF-36 may be useful in stratifying hospitalization risk among HIV-infected populations.

Impact of depression and recreational drug use on emergency department encounters and hospital admissions among people living with HIV in Ontario: A secondary analysis using the OHTN cohort study

Introduction

Nearly half of HIV-positive patients experience mental health and substance use problems, but many do not receive adequate or ongoing mental health or addiction care. This lack of ongoing care can result in the use of costly acute care services. Prospective evaluations of the relationship between psychiatric and substance use disorders and acute care services use are lacking, and this information is needed to understand unmet needs and improve access to appropriate services.

Methods

We conducted a secondary data analysis from a multicenter, longitudinal, prospective cohort study (n = 3,482 adults) between October 1, 2007 and March 31, 2013. We used explanatory extended Cox proportional hazard regression models to examine the impact of current depression and recreational drug use on acute care services use, and to explore whether current depression and recreational drug use were associated with potentially avoidable acute care services use.

Results

Over our 5.5 year study period, HIV-positive participants with current depression-only (aHR [95% CI]:1.2[1.1–1.4]), recreational drug use-only (1.3[1.1–1.6]), or co-occurring depression and recreational drug use (1.4[1.2–1.7]) were associated with elevated hazard of emergency department (ED) encounters compared to participants without these conditions. Over half of ED encounters were potentially avoidable. Participants with current depression-only (1.3[1.1–1.5];1.3[1.03–1.6]), recreational drug use-only (1.3[1.04–1.6];1.5[1.1–1.9]), or co-occurring depression and recreational drug use (1.3[1.04–1.7];1.4[1.06–1.9]) were associated with elevated hazard of low-acuity or repeated ED encounters respectively.

Conclusions

We found a significant increase in ED services use and potentially avoidable ED encounters (including low-acuity or repeated ED encounters), particularly among those with either current depression or recreational drug use. These findings emphasize the challenges in managing HIV and mental health/addiction co-morbidities in the current HIV care model. Future research should evaluate integrated and collaborative care programs for improving the coordination of care and effectively treat mental health and addiction problems among HIV-positive patients in Ontario.

Trends in discharges from the HIV/AIDS ward at a tertiary Canadian Hospital from 2005 to 2014

Advances in HIV therapies have transformed HIV infection into a manageable chronic disease. Accordingly, hospital admission trends among people living with HIV may have evolved over time. This study describes discharge diagnoses from the dedicated HIV/AIDS ward at St. Paul's Hospital in Vancouver, Canada. A retrospective database review of admissions to the HIV/AIDS ward between 1 July 2005 and 30 June 2014 was conducted. Primary discharge diagnoses were manually categorized by condition and reviewed by two physicians. Data were analysed in 12-month intervals. Trends were fitted using generalized estimating equations. A total of 1595 individuals with 3919 admissions were included. The median age was 46 years, 77.1% identified as male, 63.6% had a history of injection drug use (IDU) and 61.8% had a history of hepatitis C virus exposure. The most common reasons for admission included non-opportunistic respiratory tract infections (18.2%), cellulitis (7.3%), gastroenteritis (6.0%), endocarditis/bacteremia (4.9%) and bone/joint infections (3.5%). The proportion of admissions attributable to opportunistic infections declined from 16.2% in 2005 to 5.5% in 2014. Over this period, the proportion of individuals on antiretroviral therapy and with virologic suppression increased (odds ratio 1.19 [95% confidence interval 1.16, 1.23] and 1.22 [95% confidence interval 1.17, 1.26], respectively). These results demonstrate a decline in admissions related to opportunistic infections but increased admissions due to other infections among people living with HIV. Preventive and outpatient care for respiratory infections and complications of IDU may further improve health care outcomes and decrease hospital admissions in this setting.

The impact of HIV diagnosis on length of hospital stay in New York City, NY, USA

While hospitalizations among people living with human immunodeficiency virus (PLWH) have been elevated in the past compared to their uninfected counterparts, the introduction of antiretroviral therapy (ART) has resulted in great strides in controlling symptomatic infection. However, research largely overlooks important differences among HIV-infected individuals, primarily PLWH who are symptomatic versus those who are asymptomatic. We conducted a retrospective study assessing the length of hospital stay among 717,237 admissions from three hospitals in the New York City area. Using zero-truncated negative binomial regression we documented trends in length of hospital stay among individuals who are HIV positive (with symptoms versus those without symptoms) compared to HIV-negative patients over nine consecutive years, from 2006 to 2014. Approximately 0.85% of the admissions were infected with asymptomatic HIV (n = 6,131), while 1.43% of admissions were infected with symptomatic HIV (n = 10,271). The length of stay (LOS) among symptomatic HIV-infected admissions was 32.0% (95% CI: 29.7%-34.2%) longer than LOS in the general admissions. The mean LOS dropped about 1.5% (95% CI: 1.5%-1.6%) per year in the study sample. The LOS in inpatients with asymptomatic HIV had the same LOS as the general inpatient population. Our findings highlight the need for comprehensive strategies to reduce length of hospitalization among HIV-infected individuals.

Hospitalization of HIV positive patients: Significant demand affecting all hospital sectors

BACKGROUND

In a context of the evolution of severe morbidities in patients living with HIV (PLWH), the aim of this study was to describe reasons for hospitalization and the mode of care for the patients requiring hospitalization.

METHODS

All admissions (≥24h) of PLWH to 10 hospitals in the south of Paris (COREVIH Ile-de-France Sud) between 1/1/2011 and 12/31/2011 were identified. The hospital database and the file of patients followed in the HIV referral department of each hospital were matched. Detailed clinical and biological data were collected, by returning to the individual medical records, for a random sample (65% of hospitalized patients).

RESULTS

A total of 3013 hospitalizations (1489 patients) were recorded in 2011. The estimated rate of hospitalized patients was about 8% among the 10105 PLWH routinely managed in COREVIH Ile-de-France Sud in 2011. The majority (58.5%) of these hospitalizations occurred in a unit other than the HIV referral unit. Non-AIDS-defining infections were the main reason for admission (16.4%), followed by HIV-related diseases (15.6%), hepatic/gastrointestinal diseases (12.0%), and cardiovascular diseases (10.3%). The median length of stay was 5 days overall (IQR: 2-11), it was longer among patients admitted to a referral HIV care unit than to another ward. HIV infection had been diagnosed >10 years previously in 61.4% of these hospitalized patients. They often had associated comorbidities (coinfection HCV/HVB 40.5%, smoking 45.8%; hypertension 33.4%, dyslipidemia 28.8%, diabetes 14.8%). Subjects over 60 years old accounted for 15% of hospitalized patients, most of them were virologically controlled under HIV treatment, and cardiovascular diseases were their leading reason for admission.

CONCLUSION

Needs for hospitalization among PLWH remain important, with a wide variety in causes of admission, involving all hospital departments. It is essential to prevent comorbidities to reduce these hospitalizations, and to maintain a link between the management of PLWH, that becomes rightly, increasing ambulatory, and recourse to specialized inpatient services.

Thirty-day Readmission Rates in an HIV-infected Cohort From Rio de Janeiro, Brazil

BACKGROUND

The 30-day readmission rate is an indicator of the quality of hospital care and transition to the outpatient setting. Recent studies suggest HIV infection might increase the risk of readmission although estimates of 30-day readmission rates are unavailable among HIV-infected individuals living in middle/low-income settings. Additionally, factors that may increase readmission risk in HIV-infected populations are poorly understood.

METHODS

Thirty-day readmission rates were estimated for HIV-infected adults from the Instituto Nacional de Infectologia Evandro Chagas/Fiocruz cohort in Rio de Janeiro, Brazil, from January 2007 to December 2013. Cox regression models were used to evaluate factors associated with the risk of 30-day readmission.

RESULTS

Between January 2007 and December 2013, 3991 patients were followed and 1861 hospitalizations were observed. The estimated 30-day readmission rate was 14% (95% confidence interval: 12.3 to 15.9). Attending a medical visit within 30 days after discharge (adjusted hazard ratio [aHR] = 0.73, P = 0.048) and being hospitalized in more recent calendar years (aHR = 0.89, P = 0.002) reduced the risk of 30-day readmission. In contrast, low CD4 counts (51-200 cells/mm³: aHR = 1.70, P = 0.024 and ≤ 50 cells/mm³: aHR = 2.05, P = 0.003), time since HIV infection diagnosis ≥10 years (aHR = 1.58, P = 0.058), and leaving hospital against medical advice (aHR = 2.67, P = 0.004) increased the risk of 30-day readmission.

CONCLUSIONS

Patients with advanced HIV/AIDS are most at risk of readmission and should be targeted with prevention strategies to reduce this risk. Efforts to reduce discharge against medical advice and to promote early postdischarge medical visit would likely reduce 30-day readmission rates in our population.

Hospitalizations of HIV patients in a major Israeli HIV/AIDS center during the years 2000 to 2012

To evaluate hospitalization rates and causes among human immunodeficiency virus (HIV) patients in the late highly active antiretroviral therapy (HAART) era. Data during the years 2000 to 2012 were obtained from hospital/clinical charts. Hospitalizations were defined as a ≥24 hours hospital admission. Obstetric admissions were excluded. Causes of hospitalizations were defined as acquired immune deficiency syndrome (AIDS)-defining illnesses, AIDS-related diseases (HAART adverse events, metabolic complications and non-AIDS-defining tumors/infections), and non-HIV-related diseases. Hospitalization rates are presented as admissions per 100 patient years. The number of HIV patients (58% males) in our center increased from 521 in 2000 to 1169 in 2012. 1676 hospital admissions (in 557 patients) were observed during the years of the study. The mean number of admissions per hospitalized patient was 3 ± 3.39. Hospitalization rates of HIV patients declined significantly (18.4/100 in 2000, 9/100 patient years in 2012; P = .0001), but it was higher than the rates reported in the Israeli general population (X8.76 in 2000, X6.04 in 2012). Furthermore, hospitalizations for AIDS-defining illness declined (from 46.9% to 16.1%) whereas non-HIV-related hospitalizations increased (from 31.3% to 60.1%). Lower cluster of differentiation 4 (CD4) cell counts and older age, at the time of HIV diagnosis, were associated with higher rates of admissions (especially for AIDS-defining illnesses) and mortality. Hospitalization rates of HIV patients, especially for AIDS-defining illness, continue to decline in the late HAART era despite the increasing age of the patients, though it is still higher than that of the general population. Low CD4 cell counts and older age, at the time of HIV diagnosis, are associated with readmissions and mortality.

Frailty and Cause-Specific Hospitalization Among Persons Aging With HIV Infection and Injection Drug Use

Background

Hospitalization events exact a substantial toll across the age spectrum. Frailty is associated with all-cause hospitalization among HIV-uninfected adults aged 65 years and older. Limited data exist on the frailty relationship to hospitalization among HIV-infected persons or those aged less than 65 years. Comparative investigation of the frailty relationship to specific classes of hospitalizations has rarely been reported among adults of any age. This study sought to determine the frailty relationship to three distinct classes of hospitalization events among HIV-infected persons and their uninfected counterparts.

Methods

Frailty was ascertained semiannually among persons with prior injection drug use using the five Fried phenotypic domains. Hospitalization events were categorized using Agency for Healthcare Research and Quality clinical classification software into chronic, infectious, and nonchronic, noninfectious conditions. Cox proportional hazards models were used to examine the frailty relationship to time to first hospitalization event.

Results

Among 1,303 subjects, mean age was 48 years; 32% were HIV-infected. Adjusting for sociodemographics, comorbidity, substance use, and HIV disease stage, time-updated frailty status was associated with risk for all hospitalization classes. Baseline frailty was significantly associated with all-cause (hazards ratio [HR] 1.41; 95% confidence interval [CI], 1.06, 1.87), chronic (HR 2.13; 95% CI, 1.46, 3.11), and infectious disease hospitalization (HR 2.51; 95% CI, 1.60, 3.91) but not with nonchronic, noninfectious hospitalization risk (HR 1.09; 95% CI, 0.74, 1.61).

Conclusion

The frailty phenotype predicts vulnerability to chronic and infectious disease-related hospitalization. Frailty-targeted interventions may mitigate the substantial burden of infectious and chronic disease-related morbidity and health care utilization in HIV-infected and uninfected populations.

Rates and predictors of injury in a population-based cohort of people living with HIV

OBJECTIVES

Injuries are responsible for 10% of the global burden of disease; however, the epidemiology of injury among people living with HIV (PLHIV) has not been well elucidated. This study seeks to characterize rates and predictors of injury among PLHIV compared to the general population in British Columbia (BC), Canada.

DESIGN

A population-based dataset was created via linkage between the BC Centre for Excellence in HIV/AIDS and PopulationDataBC.

METHODS

PLHIV aged 20 years and older were compared to a random 10% sample of the adult general population. The International Classification of Diseases 9 and 10 codes were used to classify unintentional and intentional injuries based on the external cause of the injury from 1996 to 2013. Generalized estimating equation (GEE) Poisson regression models were fit to estimate the effect of HIV status on rates of unintentional and intentional injury, and to identify correlates of injury among PLHIV.

RESULTS

The crude incidence rate of unintentional injury was 18.56/1000 person-years [95% confidence interval (CI) 17.77-19.39] among PLHIV and 8.51/1000 person-years (95% CI 8.42-8.59) in the general population. Among PLHIV, 13.45% of deaths were due to injury, compared to 5.52% of deaths in the general population. In adjusted models, PLHIV were more likely to report unintentional (incidence rate ratio 1.42, 95% CI 1.32-1.52) and intentional injury (incidence rate ratio 1.93, 95% CI 1.70-2.18) compared to the general population.

CONCLUSIONS

We identified elevated rates of intentional and unintentional injury among PLHIV. Injuries are largely preventable; as such, targeted efforts are needed to decrease the burden of injury-related disability and death among PLHIV.

Hospitalization rates, length of stay and in-hospital mortality in a cohort of HIV infected patients from Rio de Janeiro, Brazil

In this study, we evaluated trends in hospitalization rates, length of stay and in-hospital mortality in a cohort of HIV-infected patients in Rio de Janeiro, Brazil, from 2007 through 2013. Among the 3991 included patients, 1861 hospitalizations occurred (hospitalization rate of 10.44/100 person-years, 95% confidence interval 9.98–10.93/100 person-years). Hospitalization rates decreased annually (per year incidence rate ratio 0.92, 95% confidence interval 0.89–0.95) as well as length of stay (median of 15 days in 2007 vs. 11 days in 2013, p-value for trend < 0.001), and in-hospital mortality (13.4% in 2007 to 8.1% in 2013, p-value for trend = 0.053). Our results show that, in a middle-income setting, hospitalization rates are decreasing over time and non-AIDS hospitalizations are currently more frequent than those related to AIDS. Notwithstanding, compared with high-income settings, our patients had longer length of stay and higher in-hospital mortality. Further studies addressing these outcomes are needed to provide information that may guide protocols and interventions to further reduce health-care costs and in-hospital mortality.

Profile of Hospitalized HIV-Infected Persons in the Highly Active Antiretroviral Therapy Era in Barbados

OBJECTIVES

To investigate the reasons for hospitalization and its outcome in the era of highly active antiretroviral therapy (HAART) in Barbados. This report also describes the profiles of the HIV-infected persons who were hospitalized in the HAART era.

METHODS

The authors examined the admission case notes to conduct an observational, retrospective study of all HIV-infected patients admitted to the Queen Elizabeth Hospital (QEH) during September 1, 2004, through March 31, 2005. Data collected included patients' profile, including the date of diagnosis of HIV infection. Outcome of the current admission in terms of discharge or death and the final diagnosis at the time of discharge or death was noted.

RESULTS

Over the 6-month period, there were 160 adult admissions to the QEH where HIV/AIDS was at least one of the final diagnoses. Eighty-four (52.5%) admissions were in persons who were known to be HIV infected prior to the current admission, where a diagnosis of HIV infection was made for the first time during the current hospitalization in the remaining 76 (47.5%) cases. Nearly two thirds of those hospitalized and who had a CD4 count done had CD4 counts of < 200. Overall, opportunistic infection was the most common (38.1%), at discharge or as a final diagnosis, followed by serious bacterial infections, anemia, and HIV nephropathy. The outcome of these admissions was death in 30 (18.7%) cases, whereas the patient was discharged in the remaining 130 (81.3%) cases.

CONCLUSIONS

A significant proportion of the hospitalized HIV-infected persons in the HAART era is newly diagnosed. The majority of those hospitalized had severe immunodeficiency, and consequently opportunistic infection was the most common final diagnosis.

Alcohol-Related Diagnoses and All-Cause Hospitalization Among HIV-Infected and Uninfected Patients: A Longitudinal Analysis of United States Veterans from 1997 to 2011

Individuals with HIV infection are living substantially longer on antiretroviral therapy, but hospitalization rates continue to be relatively high. We do not know how overall or diagnosis-specific hospitalization rates compare between HIV-infected and uninfected individuals or what conditions may drive hospitalization trends. Hospitalization rates among United States Veterans were calculated and stratified by HIV serostatus and principal diagnosis disease category. Because alcohol-related diagnoses (ARD) appeared to have a disproportional effect, we further stratified our calculations by ARD history. A multivariable Cox proportional hazards model was fitted to assess the relative risk of hospitalization controlling for demographic and other comorbidity variables. From 1997 to 2011, 46,428 HIV-infected and 93,997 uninfected patients were followed for 1,497,536 person-years. Overall hospitalization rates decreased among HIV-infected and uninfected patients. However, cardiovascular and renal insufficiency admissions increased for all groups while gastrointestinal and liver, endocrine, neurologic, and non-AIDS cancer admissions increased among those with an alcohol-related diagnosis. After multivariable adjustment, HIV-infected individuals with an ARD had the highest risk of hospitalization (hazard ratio 3.24, 95 % CI 3.00, 3.49) compared to those free of HIV infection and without an ARD. Still, HIV alone also conferred increased risk (HR 2.08, 95 % CI 2.04, 2.13). While decreasing overall, risk of all-cause hospitalization remains higher among HIV-infected than uninfected individuals and is strongly influenced by the presence of an ARD.

Examining the Health Care Experiences of Women Living with Human Immunodeficiency Virus (HIV) and Perceived HIV-Related Stigma

INTRODUCTION

The increased incidence of human immunodeficiency virus (HIV) in women, particularly marginalized women, prompted research to examine women's health service experiences at a local outpatient clinic.

METHODS

A qualitative case study using semistructured interviews examined facilitators and barriers to health care services. Seventeen women living with HIV who accessed care at an outpatient HIV clinic in central west Ontario were interviewed. Thematic analysis was used to code health care experiences perceived as HIV-related stigma.

RESULTS

Women perceived HIV-related stigma when health care providers lacked basic HIV knowledge and failed to uphold the ethical principles of patient-provider relationships, resulting in women's disengagement from health care.

CONCLUSIONS

We propose a community-based participatory research framework to reform health care educational curriculum toward a culture of health care safety that is inclusive of people living with HIV.

Characteristics and predictors of death among hospitalized HIV-infected patients in a low HIV prevalence country: Bangladesh

BACKGROUND

Predictors of death in hospitalized HIV-infected patients have not been previously reported in Bangladesh.

OBJECTIVE

The primary aim of this study was to determine predictors of death among hospitalized HIV-infected patients at a large urban hospital in Bangladesh.

METHODS

A study was conducted in the HIV in-patient unit (Jagori Ward) of icddr,b's Dhaka Hospital. Characteristics of patients who died during hospitalization were compared to those of patients discharged from the ward. Bivariate analysis was performed to determine associations between potential risk factors and death. Multivariable logistic regression was used to identify factors independently associated with death.

RESULTS

Of 293 patients admitted to the Jagori Ward, 57 died during hospitalization. Most hospitalized patients (67%) were male and the median age was 35 (interquartile range: 2-65) years. Overall, 153 (52%) patients were diagnosed with HIV within 6 months of hospitalization. The most common presumptive opportunistic infections (OIs) identified were tuberculosis (32%), oesophageal candidiasis (9%), Pneumocystis jirovecii pneumonia (PJP) (8%), and histoplasmosis (7%). On multivariable analysis, independent predictors of mortality were CD4 count ≤200 cells/mm3 (adjusted odds ratio [aOR]: 16.6, 95% confidence interval [CI]: 3.7-74.4), PJP (aOR: 18.5, 95% CI: 4.68-73.3), oesophageal candidiasis (aOR: 27.5, 95% CI: 5.5-136.9), malignancy (aOR:15.2, 95% CI: 2.3-99.4), and bacteriuria (aOR:7.9, 95% CI: 1.2-50.5). Being on antiretroviral therapy prior to hospitalization (aOR: 0.2, 95% CI: 0.06-0.5) was associated with decreased mortality.

CONCLUSION

This study showed that most patients who died during hospitalization on the Jagori Ward had HIV-related illnesses which could have been averted with earlier diagnosis of HIV and proper management of OIs. It is prudent to develop a national HIV screening programme to facilitate early identification of HIV.

Increased costs of HIV care associated with aging in an HIV-infected population

OBJECTIVES

Improved survival has shifted the HIV epidemic in the developed world towards more individuals >50 years of age. Older individuals, with new or longstanding HIV infection, are at greater risk for HIV-related and non-HIV-related conditions, compounding the burden and complexity of HIV management. The aim of the study was to examine the impact of age on the cost of HIV care in a well-defined HIV-infected population.

METHODS

All HIV-infected individuals >16 years old receiving HIV care between 1 January 2000 and 1 January 2011 were included in the study. The costs of antiretroviral therapy (ART), HIV-related out-patient care and HIV-related in-patient care were collected using mean cost per person, per month (PPPM) as the comparator variable for the comparison between older (>50 years old) and younger (≤ 50 years old) patients.

RESULTS

The proportion of older patients increased from 9.6% to 25.4% and proportional costs increased from 25% to 31% from 1999 to 2010. Older patients were more likely than younger patients to be on ART (89% vs. 69%, respectively; P<0.01) and to have AIDS (29% vs. 20%, respectively; P<0.05) but had similar median CD4 counts (404 vs. 396 cells/μL, respectively; not significant). They incurred higher costs for all aspects of HIV care throughout the entire 12 years. By 2010, the mean PPPM cost of HIV care for longstanding older patients was $1325 compared with $1075 for younger patients. More expensive ART as a consequence of more complex regimens, more comorbid interactions and greater adherence accounted for most of the cost difference.

CONCLUSIONS

The aging of the HIV-infected population in care is leading to increased HIV care costs. Health care planners and funding agencies need to be aware of the impact of this important shift in HIV demographics on the overall costs of HIV care.

Severe morbidity according to sex in the era of combined antiretroviral therapy: the ANRS CO3 Aquitaine Cohort

OBJECTIVE

To describe trends and determinants of severe morbidity in HIV-infected women and men.

DESIGN

A French prospective cohort of HIV-infected patients of both sexes and all transmission categories.

METHODS

We used hospital admission data from January 2000 to December 2008. A severe morbid event (SME) was defined as a clinical event requiring hospitalization for ≥48 h, several events could be reported during hospitalization. Yearly incidence rates of SME were estimated and compared using Generalized Estimating Equations.

RESULTS

Among 4,987 patients (27% women), followed for a median of 8.7 years, 1,473 (30%) were hospitalized (3,049 hospitalizations for 5,963 SME). The yearly incidence rate of hospitalization decreased in men, from 155 in 2000 to 80/1,000 person-years (PY) in 2008 and in women, from 125 to 71/1,000 PY, (p<0.001). This trend was observed for all SME except for hepatic events, stable in men (15 to 13/1,000 PY) and increasing in women (2.5 to 11.5), cardiovascular events increasing in men (6 to 10/1,000 PY) and in women (6 to 14) and non-AIDS non-hepatic malignancies increasing in men (4 to 7/1,000 PY) and stable in women (2.5). Intraveneous drug users, age >50 years, HIV RNA >10,000 copies, CD4 <500/mm3, AIDS stage, hepatitis C co-infection and cardiovascular risk factors (diabetes, high blood pressure, and tobacco use) were associated with SME.

CONCLUSIONS

HIV-infected individuals in care in France require less and less frequently hospitalization. Women are now presenting with severe hepatic and cardio-vascular events. Disparities in SME between men and women are primarily explained by different exposure patterns to risk factors. Women should be targeted to benefit cardiovascular prevention policies as well as men.

Antiretroviral Therapy (ART) Use, Human Immunodeficiency Virus (HIV)-1 RNA Suppression, and Medical Causes of Hospitalization Among HIV-Infected Intravenous Drug Users in the Late ART Era

HIV-infected intravenous drug users are admitted to hospital mainly for non-HIV related illnesses in the late ART era. However , current ART use at admission is low and determines hospital discharge diagnoses.

Background.

 Antiretroviral therapy (ART) has reduced the rates and changed the causes of hospital admission. However, human immunodeficiency virus-positive intravenous drug users (HIV-IDU) continue to have increased hospitalizations and discharge diagnosis are less defined in the late ART era. Our aim was to examine ART use, HIV-1 RNA suppression, and hospital discharge diagnoses among HIV-IDU admitted to an urban hospital.

Methods.

 A retrospective analysis was made of HIV-IDU admitted for medical causes for the first time (2006–2010). Surgical, obstetric, or mental (except HIV-associated neurocognitive disorder) diagnoses were excluded. Clinical characteristics, number of admissions, and primary discharge diagnoses were determined for each patient.

Results.

 Three hundred and seventy-five admissions were recorded among 197 hospitalized HIV-IDU. Lifetime prevalence of ART use was 83.2% (164 of 197) and the rate of HIV-1 RNA <50 copies/mL was 38.1% (75 of 197). Primary discharge diagnosis groups were as follows: bacterial infections (59.2%), chronic end-organ damage (16.8%), complications derived from injected drug use (16.8%), malignancies (9.1%), and opportunistic infections (6.6%). Chronic end-organ damage was diagnosed more frequently in patients with HIV-1 RNA <50 copies/mL (36% vs 4.9%; P < .000), and complications derived from injected drug use (23.8% vs 5.3%; P < .0008) and acquired immune deficiency syndrome (AIDS) opportunistic infections (19.8% vs 1.3% P < .019) were usually diagnosed in patients with HIV-1 RNA detectable viral load.

Conclusions.

 Human immunodeficiency virus-positive intravenous drug users are admitted to hospitals mainly for non-AIDS-related illnesses; however, sustained HIV-1 RNA viral load suppression is poor and determines hospital discharge diagnoses. Providers need to be aware of the management of HIV-related comorbidities and reinforce strategies to improve ART retention in this population.

Analysis of HIV/AIDS DRG in Portugal: a hierarchical finite mixture model

Inpatient length of stay (LOS) is an important measure of hospital activity, but its empirical distribution is often positively skewed, representing a challenge for statistical analysis. Taking this feature into account, we seek to identify factors that are associated with HIV/AIDS through a hierarchical finite mixture model. A mixture of normal components is applied to adult HIV/AIDS diagnosis-related group data (DRG) from 2008. The model accounts for the demographic and clinical characteristics of the patients, as well the inherent correlation of patients clustered within hospitals. In the present research, a normal mixture distribution was fitted to the logarithm of LOS and it was found that a model with two-components had the best fit, resulting in two subgroups of LOS: a short-stay subgroup and a long-stay subgroup. Associated risk factors for both groups were identified as well as some statistical differences in the hospitals. Our findings provide important information for policy makers in terms of discharge planning and the efficient management of LOS. The presence of "atypical" hospitals also suggests that hospitals should not be viewed or treated as homogenous bodies.

Time to linkage to care and viro-immunologic parameters of individuals diagnosed before and after the 2006 HIV testing recommendations

OBJECTIVES

To assess the time from linkage to care and viro-immunologic parameters before and after implementation of the Centers for Disease Control and Prevention's 2006 revised human immunodeficiency virus (HIV) testing strategy.

METHODS

Case reports from South Carolina's enhanced HIV/AIDS (acquired immunodeficiency syndrome) Reporting System were used to compare time to linkage to care and viro-immunologic indicators at diagnosis and 1 year after diagnosis of HIV in individuals diagnosed between 2004 and 2006 (n = 2456) with those diagnosed between 2008 and 2010 (n = 2118). CD4 T-cell count/percent and viral load tests were used as a proxy for a clinical visit and to determine disease stage.

RESULTS

Individuals diagnosed between 2008 and 2010 were less likely than those diagnosed between 2004 and 2006 to be in care after 12 months than within 3 months of HIV diagnosis (adjusted odds ratio [AOR] 0.42, 95% confidence interval [CI] 0.34-0.51). Individuals diagnosed between 2008 and 2010 were more likely than those diagnosed between 2004 and 2006 to have high CD4 T-cell counts (>500 cells per cubic millimeter than ≤200 cells per cubic millimeter; AOR 1.24, 95% CI 1.01-1.51) and have undetectable viral loads 1 year post-HIV diagnosis (AOR 8.42, 95% CI 6.96-10.18). Although period of diagnosis did not predict disease stage 1 year post-HIV diagnosis (AOR 0.99, 95% CI 0.87-1.13), there was a decrease from 13% between 2004 and 2006 to 10% between 2008 and 2010 in the percentage of HIV-only patients at diagnosis who progressed to AIDS 1 year post-HIV diagnosis.

CONCLUSIONS

Implementation of routine, opt-out HIV testing resulted in more timely linkage to care and improved viro-immunologic parameters 1 year postdiagnosis when compared with the previous testing recommendations.

Socio-economic- and sex-related disparities in rates of hospital admission among patients with HIV infection in Ontario: a population-based study

BACKGROUND

Among people living with HIV infection in the era of combination antiretroviral therapy (cART), admission to hospital may indicate inadequate community-based care. As such, population-based assessments of the utilization of inpatient services represent a necessary component of evaluating the quality of HIV-related care.

METHODS

We used a validated algorithm to search Ontario's administrative health care databases for all persons living with HIV infection aged 18 years or older between 1992/93 and 2008/09. We then conducted a population-based study using time-series and longitudinal analyses to first quantify the immediate effect of cART on hospital admission rates and then analyze recent trends (for 2002/03 to 2008/09) in rates of total and HIV-related admissions.

RESULTS

The introduction of cART in 1996/97 was associated with more pronounced reductions in the rate of hospital admissions among men than among women (for total admissions, -89.9 v. -60.5 per 1000 persons living with HIV infection, p = 0.003; for HIV-related admissions, -56.9 v. -36.3 per 1000 persons living with HIV infection, p < 0.001). Between 2002/03 and 2008/09, higher rates of total hospital admissions were associated with female sex (adjusted relative rate [RR] 1.15, 95% confidence interval [CI] 1.05-1.27) and low socio-economic status (adjusted RR 1.21, 95% CI 1.14-1.29). Higher rates of HIV-related hospital admission were associated with low socio-economic status (adjusted RR 1.30, 95% CI 1.17-1.45). Recent immigrants had lower rates of both total admissions (adjusted RR 0.70, 95% CI 0.61-0.80) and HIV-related admissions (adjusted RR 0.77, 95% CI 0.61-0.96).

INTERPRETATION

We observed important socio-economic- and sex-related disparities in rates of hospital admission among people with HIV living in Ontario, Canada.

Causes of first hospitalization among 1121 HIV-infected children: comparison of the pre-Pneumocystis jiroveci pneumonia prophylaxis, pre-antiretroviral therapy and antiretroviral therapy periods

This study identified causes of first hospitalization among perinatally acquired HIV-infected children at Chiang Mai University Hospital between 1989 and 2009. Data were stratified into three seven-year time periods: pre-Pneumocystis jiroveci pneumonia (PJP) prophylaxis, pre-antiretroviral therapy (ART) and ART period. Over the 21-year study period, 1121 children were hospitalized. The mean age at admission was 2.7 years and had become older over time. Of the 1121 hospitalization causes, 50.6% were AIDS-defining illnesses (ADIs), 48.1% were non-AIDS-defining illnesses (NADIs) and 1.3% were related to immune reconstitution syndrome. Types of ADIs changed over time: PJP and recurrent Salmonella septicaemia decreased, while mycobacterial infection and systemic fungal infection increased. For NADIs, bacterial infections, viral infections and gastrointestinal problems decreased, but haematological problems increased in the third period. Decline in the number of hospitalizations and mortality rate, increase in the mean age of hospitalized children, change in the distribution of specific illnesses and appearance of immune reconstitution syndrome were observed in the ART period.

Trends in reasons for hospitalization in a multisite United States cohort of persons living with HIV, 2001-2008

INTRODUCTION

Hospitalization rates for comorbid conditions among persons living with HIV in the current highly active antiretroviral therapy era are unknown.

METHODS

Hospitalization data from 2001 to 2008 were obtained on 11,645 adults receiving longitudinal HIV care at 4 geographically diverse US HIV clinics within the HIV Research Network. Modified clinical classification software from the Agency for Healthcare Research and Quality assigned primary ICD-9 codes into diagnostic categories. Analysis was performed with repeated measures negative binomial regression.

RESULTS

During 2001 to 2008, the rate of AIDS-defining illness (ADI) hospitalizations declined from 6.7 to 2.7 per 100 person-years, incidence rate ratio per year, 0.89 (0.87, 0.91). Among the other diagnostic categories with average rates >2 per 100 person-years, cardiovascular hospitalizations increased over time [1.07 (1.03, 1.11)], whereas non-AIDS-defining infection [0.98 (0.96, 1.00)], psychiatric [0.96 (0.93, 1.00)], and gastrointestinal/liver [0.96 (0.92, 1.00)] were slightly decreasing or stable. Although less frequent overall, renal and pulmonary admissions also increased over time in univariate and multivariate analyses. Of all diagnostic categories, ADI admissions had the longest mean length of stay, 10.5 days.

DISCUSSION

ADI hospitalizations have continued to decline in recent years but are still relatively frequent and potentially costly given long lengths of stay. Increases or stability in the rates of chronic end-organ disease admissions imply a need for broader medical knowledge among individual clinicians and/or teams who care for persons living with HIV and a need for long-term access to medications for these conditions.

Medical ward admissions among HIV-positive patients in Winnipeg, Canada, 2003–10

Canadian data regarding the characteristics of HIV-positive patients admitted to hospital as well as the causes and patterns of admissions remain limited. Chart reviews were performed to ascertain admission diagnosis, co-morbidities and CD4 counts among this sub-population, which had an over-representation of Aboriginal persons. Infectious diseases, particularly pneumonia, represent the most common admission diagnosis for HIV-positive persons in Winnipeg. Further, individuals presenting to hospital often have very low CD4 counts, representing significant immune suppression. Earlier HIV diagnosis and treatment in an effort to delay the onset of advanced disease and hospitalization is needed.

Validation of case-finding algorithms derived from administrative data for identifying adults living with human immunodeficiency virus infection

Objective

We sought to validate a case-finding algorithm for human immunodeficiency virus (HIV) infection using administrative health databases in Ontario, Canada.

Methods

We constructed 48 case-finding algorithms using combinations of physician billing claims, hospital and emergency room separations and prescription drug claims. We determined the test characteristics of each algorithm over various time frames for identifying HIV infection, using data abstracted from the charts of 2,040 randomly selected patients receiving care at two medical practices in Toronto, Ontario as the reference standard.

Results

With the exception of algorithms using only a single physician claim, the specificity of all algorithms exceeded 99%. An algorithm consisting of three physician claims over a three year period had a sensitivity and specificity of 96.2% (95% CI 95.2%–97.9%) and 99.6% (95% CI 99.1%–99.8%), respectively. Application of the algorithm to the province of Ontario identified 12,179 HIV-infected patients in care for the period spanning April 1, 2007 to March 31, 2009.

Conclusions

Case-finding algorithms generated from administrative data can accurately identify adults living with HIV. A relatively simple “3 claims in 3 years” definition can be used for assembling a population-based cohort and facilitating future research examining trends in health service use and outcomes among HIV-infected adults in Ontario.

Assessment of hospitalizations among HIV patients in the UK: a national cross-sectional survey

This 2007 cross-sectional survey is illustrative of UK HIV hospitalization patterns. Data were received for 255 inpatients of whom 43.9% had AIDS-defining illnesses (ADIs). A total of 56.3% had CD4 counts <200 mm(3) and 17% were diagnosed with HIV on their current admission. In those diagnosed for >3 months with CD4 < 200/mm(3) (90/188), 47% were not on combination antiretroviral therapy (cART). ADIs still make up a substantial proportion of inpatient work in the UK and late diagnosis and failure to benefit from cART remain too common.

Trends and causes of hospitalizations among HIV-infected persons during the late HAART era: what is the impact of CD4 counts and HAART use?

BACKGROUND

Declining rates of hospitalizations occurred shortly after the availability of highly active antiretroviral therapy (HAART). However, trends in the late HAART era are less defined, and data on the impact of CD4 counts and HAART use on hospitalizations are needed.

METHODS

We evaluated hospitalization rates from 1999 to 2007 among HIV-infected persons enrolled in a large US military cohort. Poisson regression was used to compare hospitalization rates per year and to examine factors associated with hospitalization.

RESULTS

Of the 2429 participants, 822 (34%) were hospitalized at least once with 1770 separate hospital admissions. The rate of hospitalizations (137 per 1000 person-years) was constant over the study period [relative rate (RR) 1.00 per year change, 95% confidence interval: 0.98 to 1.02]. The hospitalization rates due to skin infections (RR: 1.50, P = 0.02), methicillin-resistant staphylococcus aureus (RR: 3.19, P = 0.03), liver disease (RR: 1.71, P = 0.04), and surgery (RR: 1.17, P = 0.04) significantly increased over time, whereas psychological causes (RR: 0.60, P < 0.01) and trauma (RR: 0.54, P < 0.01) decreased. In the multivariate model, higher nadir CD4 (RR: 0.92 per 50 cells, P < 0.01) and higher proximal CD4 counts (RR of 0.71 for 350-499 vs. <350 cells/mm(3) and RR 0.67 for > or = 500 vs. 350 cells/mm(3), both P < 0.01) were associated with lower risk of hospitalization. Risk of hospitalization was constant for proximal CD4 levels above 350 (RR: 0.94 P = 0.51, CD4 > or = 500 vs. 350-499). HAART was associated with a reduced risk of hospitalization among those with a CD4 <350 (RR: 0.72, P = 0.02) but had smaller estimated and nonsignificant effects at higher CD4 levels (RR: 0.81, P = 0.33 and 1.06, P = 0.71 for CD4 350-499 and > or = 500, respectively).

CONCLUSIONS

Hospitalizations continue to occur at high rates among HIV-infected persons with increasing rates for skin infections, methicillin-resistant staphylococcus aureus, liver disease, and surgeries. Factors associated with a reduced risk of hospitalization include CD4 counts >350 cells per cubic millimeter and HAART use among patients with a CD4 count <350 cells per cubic millimeter.

Hospitalizations in a cohort of HIV patients in Australia, 1999-2007

OBJECTIVES

To describe hospitalization rates, risk factors and associated diagnoses in people with HIV in Australia between 1999 and 2007.

DESIGN

Retrospective cohort study of people with HIV (n = 842) using data linkage between the Australian HIV Observational Database and administrative hospital morbidity data collections.

METHODS

Incidence rate ratios with 95% confidence intervals were estimated using Poisson regression models to assess risk factors for hospitalization. Predictors of length of stay were assessed using generalized mixed models. The association between hospitalization and mortality was assessed using Cox regression.

RESULTS

In 4519 person-years of observation, there were 2667 hospital admissions; incidence rate of 59 per 100 person-years. Hospitalization rates were 50-300% higher in this cohort than comparable age and sex strata in the general population. Older age (incidence rate ratio 1.46, 95% confidence interval 1.28-1.65 per 10-year increase) and prior AIDS (incidence rate ratio 1.71, 95% confidence interval 1.24-2.35) were significantly associated with hospitalization. Other predictors of hospitalization included lower CD4 cell counts, higher HIV RNA, longer duration of HIV infection and experience with more drug classes. Lower CD4 cell counts, older age and hepatitis C virus antibody positivity were independently associated with longer hospital stay. Non-AIDS diseases were the principle reason for admission in the majority of cases. Mortality was associated with more frequent hospitalization during the study period.

CONCLUSION

Hospitalization rates are higher in people with HIV than the general population in Australia and are associated with markers of advanced HIV disease despite the widespread use of combination antiretroviral therapy.

Integrating HIV clinical services into primary health care in Rwanda: a measure of quantitative effects

BACKGROUND

With the intensive scale-up of care and treatment for HIV/AIDS in developing countries, some fear that intensified attention to HIV programs may overwhelm health care systems and lead to declines in delivery of other primary health care. Few data exist that confirm negative or positive synergies on health care provision generally resulting from HIV-dedicated programs.

METHODS

Using a retrospective observational design we compare aggregate service data in Rwandan health facilities before and after the introduction of HIV care on selected measures of primary health care. The study tests the hypothesis that non-HIV care does not decrease after the introduction of basic HIV care.

FINDINGS

Overall, no declines were observed in reproductive health services, services for children, laboratory tests, and curative care. Statistically significant increases were found in utilization and provision of some preventive services. Multivariate regression, including introduction of HIV care and two important health care financing initiatives in Rwanda, revealed positive associations of all with observed increases. Introduction of HIV services was especially associated with increases in reproductive health. While hospitalization rates increased for the whole sample, declines were observed at health facilities that offered basic HIV care plus highly active antiretroviral therapy.

INTERPRETATION

Our results partially counter fears that HIV programs are producing adverse effects in non-HIV service delivery. Rather than leading to declines in other primary health care delivery, our findings suggest that the integration of HIV clinical services may contribute to increases.

Predictors of mortality in HIV-associated hospitalizations in Portugal: a hierarchical survival model

BACKGROUND

The beneficial effects of highly active antiretroviral therapy, increasing survival and the prevention of AIDS defining illness development are well established. However, the annual Portuguese hospital mortality is still higher than expected. It is crucial to understand the hospitalization behaviour to better allocate resources. This study investigates the predictors of mortality in HIV associated hospitalizations in Portugal through a hierarchical survival model.

METHODS

The study population consists of 12,078 adult discharges from patients with HIV infection diagnosis attended at Portuguese hospitals from 2005-2007 that were registered on the diagnosis-related groups' database.We used discharge and hospital level variables to develop a hierarchical model. The discharge level variables were: age, gender, type of admission, type of diagnoses-related group, related HIV complication, the region of the patient's residence, the number of diagnoses and procedures, the Euclidean distance from hospital to the centroid of the patient's ward, and if patient lived in the hospital's catchment area. The hospital characteristics include size and hospital classification according to the National Health System. Kaplan-Meier plots were used to examine differences in survival curves. Cox proportional hazard models with frailty were applied to identify independent predictors of hospital mortality and to calculate hazard ratios (HR).

RESULTS

The Cox proportional model with frailty showed that male gender, older patient, great number of diagnoses and pneumonia increased the hazard of HIV related hospital mortality. On the other hand tuberculosis was associated with a reduced risk of death. Central hospital discharge also presents less risk of mortality.The frailty variance was small but statistically significant, indicating hazard ratio heterogeneity among hospitals that varied between 0.67 and 1.34, and resulted in two hospitals with HR different from the average risk.

CONCLUSION

The frailty model suggests that there are unmeasured factors affecting mortality in HIV associated hospitalizations. Consequently, for healthcare policy purposes, hospitals should not all be treated in an equal manner.

Late Diagnosis of HIV Infection: Epidemiological Features, Consequences and Strategies to Encourage Earlier Testing

A substantial proportion of HIV-infected individuals do not present for HIV testing until late in infection; these individuals are often ill, have a high mortality risk, and are less likely to respond to treatment when initiated. Furthermore, late presentation means that opportunities to reduce onward transmission, either by reducing high-risk behaviours or by reducing an individual's infectivity, are missed. The proportion of HIV-infected individuals who present late has remained relatively stable over the past decade, despite several attempts to encourage earlier diagnosis. Late presenters tend to be those at lower perceived risk of infection, those who are not routinely offered HIV testing, and are often from marginalized groups. Strategies that encourage earlier testing, including routine HIV testing in healthcare settings where high-risk individuals attend frequently, the availability of HIV testing services in non-medical settings, and partner notification schemes or peer-led projects to encourage high-risk individuals to attend for testing, may all increase the proportion of HIV-infected individuals who are aware of their HIV status, thus helping to control the spread of the epidemic. This review summarizes recent evidence on the epidemiology of late presentation and its impact on clinical progression, and describes several key strategies that may encourage earlier diagnosis.

Trends in the HIV related hospital admissions in the HAART era in Barbados, 2004-2006

Background

To investigate the reasons for hospitalizations and its outcome in the era of HAART in Barbados. This report also describes the profile of the HIV infected persons who are hospitalized in the HAART era.

Methods

This is a retrospective study of HIV related admissions in this country. We examined the admission case notes of all the adult admissions to the Queen Elizabeth Hospital where one of the discharge diagnosis was HIV infection during the April 2004 through March 2006. Data collected included patients' profile, including the date of diagnosis of HIV infection, outcome of the current admission in term of discharge or death and the final diagnosis at the time of discharge or death.

Results

Over the 24 months period there were 431 adult admissions to the medical wards of the Queen Elizabeth Hospital where one of the discharge diagnosis was HIV infection and this accounted for 5.9% of all medical admissions. 258(60%) admissions were in persons who were known to be HIV infected prior to the current admission, where as diagnosis of HIV infection was made for the first time during the current admission in case of remaining 76(47.5%) cases. Nearly half of those hospitalized, had a CD 4 cell counts of < 200/μL. Over all, opportunistic infection was the commonest (35%) discharge diagnosis, followed by serious bacterial infections, anemia and HIV nephropathy. The outcome of these admissions was death in 30 (14.2%) cases where as patient was discharged out in the remaining 181 (85.8%) cases. Of the medical admissions with HIV as one of the discharge diagnosis during the period April 04 through March 05, 43% were newly diagnosed HIV infection and the corresponding figure for the period April 05 through March 06 was 35% (P = 0.54). During the April 05 through March 04 significantly higher proportion of HIV infected adults had Anemia with a Hemoglobin less than 10 g/dL (P = 0.044), HIV related nephropathy (P = 0.0003), HAART toxicity (P = < 0.0001) and a Non-AIDS related conditions (P = 0.043) as one of the final discharge diagnosis.

Conclusion

A significant proportion of patients admitted with HIV infection were the newly diagnosed and severely immuno-supressed. An opportunistic infection continues to be the commonest discharge diagnosis, although there was a growing trend in the proportion of the discharge diagnosis being HAART toxicity and Non-AIDS related conditions. Over all hospitalization of HIV infected persons still carries a significant risk of mortality.