Health care system costs related to potentially inappropriate medication use involving opioids in older adults in Canada

BACKGROUND

Older adults are at risk of potentially inappropriate medication use given polypharmacy, multimorbidity, and age-related changes, which contribute to the growing burden associated with opioid use. The objective of this study was to estimate the costs of health service utilization attributable to opioid use and potentially inappropriate medication use involving opioids in older adults in a public health care system.

METHODS

The sample included 1201 older adults consulting in primary care, covered by the public drug plan, without a cancer diagnosis and opioid use in the year before interview. Secondary analyses were conducted using two data sources: health survey and provincial administrative data. Health system costs included inpatient and outpatient visits, physician billing, and medication costs. Unit costs were calculated using annual financial and activity reports from 2013-2014, adjusted to 2022 Canadian dollars. Opioid use and potentially inappropriate medication use involving opioids were identified over 3 years. Generalized linear models with gamma distribution were employed to model 3-year costs associated with opioid use and potentially inappropriate medication use involving opioids. A phase-based approach was implemented to provide descriptive results on the costs associated with each phase: i) no use, ii) opioid use, and iii) potentially inappropriate medication use involving opioids.

RESULTS

Opioid use and potentially inappropriate medication use involving opioids were associated with adjusted 3-year costs of $2,222 (95% CI: $1,179-$3,264) and $8,987 (95% CI: $7,370-$10,605), respectively, compared to no use. In phase-based analyses, costs were the highest during inappropriate use.

CONCLUSIONS

Potentially inappropriate medication use involving opioids is associated with higher costs compared to those observed with opioid use and no use. There is a need for more effective use of health care resources to reduce costs for the health care system.

Changes in self-rated physical and mental health and life satisfaction associated with opioid and potentially inappropriate opioid prescribing in primary care older adults

OBJECTIVE

To examine changes in life satisfaction and physical and mental health associated with opioid and potentially inappropriate opioid prescribing (PIOP) among older adults.

METHODS

Secondary data analysis from the Étude sur la Santé des Aînés (ESA)-Services study. The sample consisted of 945 older adults recruited in primary care with available health survey information linked to administrative medical record data. The exposure of interest was categorized as no prescription, opioid prescription, and PIOP, defined using the Beers criteria. Outcomes were self-rated physical health, mental health, and life satisfaction measured at baseline and at a 3-year follow-up. Generalized estimating equations were used to examine 3-year changes in outcomes as a function of opioid prescribing. Analyses were adjusted for covariates relating to health, psychosocial, and sociodemographic factors as well as duration/frequency of opioid prescribing. Analyses were conducted in the overall sample and in non-cancer patients.

RESULTS

The sample had an average age of 73.1 years; the majority was Canadian-born (96.3%) while females made up over half (55.4%) the sample. Compared to not receiving an opioid prescription, PIOP was associated with a deterioration in physical health (ORadjusted = 0.65; 95%CI = 0.49, 0.86), but not mental health and life satisfaction. In non-cancer patients, PIOP was associated with poorer physical health (ORadjusted = 0.59; 95%CI = 0.40, 0.87) and opioid prescribing was marginally associated with improved life satisfaction (ORadjusted = 1.58; 95%CI = 0.96, 2.60).

CONCLUSION

PIOP was associated with a deterioration in physical health. Patient-centred chronic pain management and the effect on health and well-being require further study in older adults.

Factors associated with potentially inappropriate opioid use in community-living older adults consulting in primary care

OBJECTIVE

To study the factors associated with opioid use and potentially inappropriate opioid use (PIOU) in primary care older adults with non-cancer pain referring to the conceptual framework developed by the American Agency for Healthcare Research and Quality.

METHODS

This is a secondary analysis of health survey and medico-administrative data from Québec, Canada. Individuals aged ≥65 were recruited between 2011 and 2013 in primary care clinics to participate in face-to-face interviews. The sample included 945 older adults without a malignant tumor over the study period or any tumor in the 2 years surrounding opioid use. Opioid use within a 3 year follow-up period was identified from the public drug plan database. Potentially inappropriate opioid use (PIOU) was defined using the American Geriatrics Society Beers 2019 list. Multinomial regression analyses were performed to study the factors (patient, pain, substance use, provider, healthcare system) associated with opioid use and PIOU.

RESULTS

In this sample of older adults, 26.2% used an opioid and 18.4% were categorized as PIOU. Factors associated with PIOU compared to opioid use included female sex, higher psychological distress, number of emergency department visits, and recruitment type of healthcare practice. Factors associated with PIOU compared to no use included female sex, country of origin, presence of a trauma, physical/psychiatric multimorbidity, number of outpatient consultations, pain severity/type, and number of prescribers.

CONCLUSIONS

Mental health and health system factors were associated with PIOU. Results highlights the importance of a multidisciplinary approach for pain management, and the urgent need for implementing organizational efforts to optimize opioid use in primary care.

Pain, functional disability and mental disorders as potential mediators of the association between chronic physical conditions and suicidal ideation in community living older adults

OBJECTIVES

To examine the associations between chronic physical conditions and suicidal ideation and to assess whether associations are mediated by pain, anxiety, depression, post-traumatic stress syndrome (PTSS), and functional disability.

METHODS

The study sample includes 1533 older adults aged 65+ recruited in primary care clinics between 2011-2013 and participating in Quebec's Health Survey on Services "Étude sur la Santé des Aînés-Services" (ESA-S) study. Path analysis was used to assess the associations. The presence of suicidal behaviour was ascertained using 4 questions. PTSS was based on a validated scale for primary care older adults. Anxiety and depression were assessed according to DSM-IV criteria. Pain was self-reported on an ordinal scale and functional disability was based on the presence of disability in 8 dimensions of activities of daily living. The main predictors included a list of 13 physical disorders identified by diagnostic codes. Suicidal ideation was also controlled by a number of socio-demographic and psychosocial factors.

RESULTS

PTSS, depression, and functional disability mediate the association between various chronic conditions and suicidal ideation. Although pain and anxiety are associated with many physical disorders, they did not mediate the association with suicidal ideation.

CONCLUSIONS

Chronic physical disorders are associated with suicidal ideation, either directly or indirectly through PTSS, depression, and functional disability. The findings underscore the importance of early identification and management of older patients with specific chronic disorders in primary care as they may be most at risk for suicidal ideation.

The association between chronic pain conditions and subclinical and clinical anxiety among community-dwelling older adults consulting in primary care

OBJECTIVE

To examine associations between chronic pain conditions, pain level, and subclinical/clinical anxiety in community-dwelling older adults.

DESIGN

Cross-sectional associations were analyzed using multinomial logistic regression to compare the odds of having subclinical/clinical anxiety by painful condition and pain level, controlling for confounders.

SETTING

Participants were recruited in primary care waiting rooms to take part in the first wave of the Étude sur la Santé des Aînés (ESA)-Services study.

SUBJECTS

1608 older adults aged 65+.

METHODS

Clinical anxiety was assessed using DSM-IV criteria. Subclinical anxiety was considered present when participants endorsed symptoms of anxiety but did not fulfill clinical diagnostic criteria for an anxiety disorder. Painful chronic conditions included arthritis, musculoskeletal conditions, gastrointestinal problems, and headaches/migraines. Presence of painful conditions was assessed using combined self-report and health administrative data sources. Pain level was self-reported on an ordinal scale. Physical comorbidities were identified from ICD-9/10 diagnostic codes and depression was evaluated based on the DSM-IV.

RESULTS

Sixty-six percent of home-living older adults suffer from a chronic pain condition. Older adults with clinical anxiety are more likely to experience musculoskeletal pain, gastrointestinal problems, headaches/migraines, and higher pain levels compared to those with no anxiety. Also, those with ≥3 painful conditions are at greater risk for subclinical and clinical anxiety compared to those with no painful condition.

CONCLUSIONS

These results emphasize the need for assessing anxiety symptoms in older adults with chronic pain conditions. Comprehensive management of comorbid chronic pain and psychopathology might help reduce the burden for patients and the healthcare system.

Sexually Transmitted and Blood-Borne Infections in Pregnant Women and Adverse Pregnancy Outcomes

OBJECTIVES

To analyze risk factors for the presence of sexually transmitted and blood-borne infections (STBBIs) in pregnancy and to determine whether pregnant women with STBBIs are more likely to experience adverse pregnancy outcomes.

METHODS

This retrospective cohort study involved analyzing the electronic records of 3460 pregnant women followed at Sainte-Justine Hospital in Montréal, Québec, between March 2017 and January 2019. An outcome is defined as a pregnancy where the woman has at least one positive laboratory result for chlamydia, gonorrhea, syphilis, hepatitis B, or hepatitis C (i.e., has one or multiple STBBIs). We performed a logistic regression analysis to determine adjusted odds ratios (aORs) for the risk factors of STBBIs in pregnant women.

RESULTS

We identified 84 positive STBBI cases, an overall prevalence of 2.4% (95% CI 1.9-2.9). A logistic regression analysis showed the following factors to be significantly associated with the presence of STBBIs in pregnancy: age <20 years (OR 4.75; 95% CI 1.89-11.96), age 20-29 years (OR 2.38; 95% CI 1.37-4.14), Afro-Caribbean origin (OR 4.12; 95% CI 1.83-9.27), other non-Caucasian origin (OR 2.38; 95% CI 1.20-4.70), and history of STBBIs (OR 2.33; 95% CI 1.02-5.36). STBBIs were not significantly associated with social and material deprivation indices nor were they associated with low birth weight or preterm birth.

CONCLUSION

This study shows age <20 years, age 20-29 years, Afro-Caribbean or other non-Caucasian origin and history of STBBIs to be risk factors for the presence of STBBIs in pregnancy. These results will allow us to propose interventions to reduce STBBIs in women with common risk factors as part of a comprehensive approach to perinatal care.