Prevalence, Awareness, Treatment, and Control of Hypertension among Chinese First-Generation Migrants and Italians in Prato, Italy: The CHIP Study

Cardiovascular risk and access to primary care: Comparisons among Chinese documented and undocumented immigrants

AIMS

The aim of this study was to examine main risk factors of undocumented Chinese migrants living in Italy when compared with Chinese migrants registered with National Health Service (NHS).

METHODS

A cohort of 3435 Chinese first-generation immigrants living in Prato underwent blood pressure (BP) measurement and blood tests. Hypertension was diagnosed for BP ≥ 140/90 mmHg at 2 visits, and/or antihypertensive drug use; type 2 diabetes (T2DM) for fasting glucose ≥ 126 mg/dL at 2 visits, and/or use of hypoglycemic drugs; hypercholesterolemia (HC) for cholesterol ≥ 240 mg/dL and/or statins use. Subjects diagnosed with hypertension, T2DM, or HC unaware of their condition were considered newly diagnosed. Comparisons were performed using multivariable adjusted logistic regression analysis.

RESULTS

A large proportion of Chinese migrants were undocumented (1766, 51 %); newly diagnoses of risk factors were performed especially among undocumented migrants; registration with NHS was associated with higher level of awareness for hypertension and T2DM and with 6 times higher rate of treatment for T2DM. Only a small minority of subjects with high cholesterol were treated with statins.

CONCLUSIONS

Undocumented immigrants had high prevalence of risk factors with lower levels of awareness than migrants registered with the NHS. Health policies targeting this hard-to-reach population needs to be improved.

Impact of migration on diabetes burden: audit in the metropolitan area of Bologna, Italy

PURPOSE

To investigate the impact of diabetes in immigrants on the Italian healthcare system, as well as their compliance with standard protocols of control and treatment.

METHODS

The prevalence of immigrants with diabetes living in the metropolitan area of Bologna (about 1 million inhabitants) in 2019 was investigated using a database containing all subjects in active follow-up for diabetes, based on antidiabetic drug use, disease-specific copayment exemption, ICD-9 codes, continuous care in diabetes units. Country of origin was derived from fiscal code.

RESULTS

The overall prevalence of diabetes (n = 53,941; 51.8% males, median age 64) was 6.1% in both Italy-born and immigrant cohorts. Immigrant prevalence was 12.4%, moderately higher than that observed in the total population (12.2%). Diabetes risk was increased in the whole immigrant cohort (odds ratio (OR) 1.74; 95% Confidence Interval (CI) 1.69-1.79). Among cases with incident diabetes, the proportion of immigrants (median age, 49 vs. 65 in Italy-born individuals) increased progressively from 11.7% to 26.5% from 2011 to 2019 (males, 8.9-21.0%; females, 14.9-32.8%) in all age groups, particularly in young adults, but also in older subjects. Metabolic control was lower in immigrants, as was adherence to shared diagnostic and therapeutic protocols, without systematic differences in antidiabetic drug use, but much lower use of drugs for comorbid conditions.

CONCLUSIONS

The population with diabetes in the metropolitan area of Bologna is rapidly changing. Quality improvement initiatives are needed to reduce the burden for the universalistic Italian health care system generated by the rapidly-growing high-risk immigrant population.

Prevalence and risk factors contributing to the occurrence of diabetes mellitus in Chinese international migrants: A narrative review

AIMS

This paper reviewed the literature on diabetes prevalence and risk factors associated with diabetes among first-generation Chinese international migrants.

METHODS

MEDLINE, Scopus, Web of Science, CINAHL and Maternity and Infant Care were searched until March 2022, for articles written in English. The quality of the included articles was assessed using the Newcastle-Ottawa Scale.

RESULTS

In total, 17 articles were included (nine for gestational diabetes, six for type 2 diabetes, and none for type 1 diabetes). The average crude prevalence rate for type 2 diabetes and gestational diabetes was 12.1% and 9.3% respectively. Risk factors contributing to the occurrence of type 2 diabetes included older age, sex, family history of type 2 diabetes, higher BMI/waist circumference, longer time since migration, alcohol consumption, smoker, hypertension, and high triglycerides. Risk factors contributing to the occurrence of gestational diabetes included older maternal age, history of gestational diabetes, higher weight/pre-pregnancy BMI, longer time since migration, and Chinese ethnicity.

CONCLUSIONS

We identified a research gap in the diabetes health of Chinese migrants, particularly for type 1 diabetes, highlighting the need for ethnic-specific diabetes research and care, including for subsequent generations of migrants and those living in developing countries.

Body-Size Perception among First-Generation Chinese Migrants in Italy

Body-size perception is an important factor in motivating people to lose weight. Study aim was to explore the perception of body image among first-generation Chinese migrants living in Italy. A sample of 1258 Chinese first-generation immigrants and of 285 native Italians living in Prato, Italy, underwent blood pressure measurements, blood tests (with measurement of glucose, cholesterol, and triglycerides), and anthropometric measurements. Body-size perception was investigated with Pulvers’ figure rating scale using logistic or linear multivariable regression adjusted for age, gender, BMI, education and years spent in Italy. Chinese migrants had lower BMI and discrepancy score (preferred minus current body size) than Italians (p < 0.05 for both). After a logistic regression analysis, the discrepancy score remained lower in the Chinese than in the Italian cohort independently from BMI and other confounders (OR 0.68; 95%CI 0.50 to 0.92). In the Chinese cohort, female gender, BMI and years spent in Italy were positive determinants of discrepancy score (desire to be thinner), while age showed negative impact (p < 0.05 for all). Overweight is an important risk factor for diabetes, a very prevalent condition among first-generation Chinese migrants. The present study offers useful information and suggests the need for prevention programs specifically addressed to men.

Gender differences in acculturation and cardiovascular disease risk-factor changes among Chinese immigrants in Italy: Evidence from a large population-based cohort

Background

In recent decades, the Chinese presence in Southern Europe has grown rapidly but no data is available on the influence that residing in Mediterranean countries has on Chinese immigrants. In this study, we aim to examine the association between acculturation and cardiovascular risk factors among first-generation Chinese immigrants in Italy.

Design

Population-based, cross-sectional study.

Methods

A sample of 2589 Chinese first-generation immigrants (1599 women and 990 men) living in Prato, Italy, underwent blood pressure measurement, blood tests (with measurement of glucose, cholesterol, and triglycerides), and anthropometric measurements. The influence of length of residence (dependent variable) on hypertension, type 2 diabetes, overweight/obesity, and hyperlipidemia (high cholesterol) (independent variables) was investigated with multivariable logistic regression adjusted for age, sex, education and urban/rural home area in China before migration.

Results

Mean age of Chinese participants was 47.2 ± 10.7 years and 61.7% were women. Immigrants residing in Italy for ≥20 years were more likely to be hypertensive [odd ratio (OR) 1.84; 95% confidence interval (CI) 1.33 to 2.59], or diabetic (1.91; 1.26 to 2.86) than those residing in Italy for <10 years. Differently, prevalence of hypercholesterolemia (total cholesterol≥240 mg/dl) was lower in immigrants residing in Italy for ≥20 years than in those with <10 years of residence (0.52; 0.32 to 0.83). The association between indicators of acculturation and cardiovascular risk factors appeared to differ by sex.

Conclusion

Acculturation of Chinese immigrants in Italy was associated with hypertension and type 2 diabetes whereas a favorable effect on hypercholesterolemia was observed.

Hypertension awareness, treatment and control among ethnic minority populations in Europe: a systematic review and meta-analysis

OBJECTIVE

Ethnic minority populations (EMPs) are disproportionally affected by hypertension-mediated complications compared with European host populations (EHPs), which might be due to disparities in hypertension awareness, treatment and control. We conducted a systematic review and meta-analysis to compare awareness, treatment and control rates among EMPs with EHPs.

METHODS

MEDLINE, EMBASE and Web of Science were searched from inception to 29 January 2020. Critical appraisal was performed according to methods of Hoy et al. Pooled odds ratios with corresponding 95% confidence intervals were calculated for these rates, stratified by ethnic group, using either random or fixed effect meta-analysis based on I2-statistics. Study was registered in PROSPRO (CRD42020107897).

RESULTS

A total of 3532 records were screened of which 16 were included in the analysis with data on 26 800 EMP and 57 000 EHP individuals. Compared with EHPs, African origin populations were more likely to be aware (odds ratio 1.26, 95% confidence interval 1.02-1.56) and treated (1.49, 1.18-1.88) for hypertension, but were less likely to have their blood pressure controlled (0.56, 0.40-0.78), whereas South Asian populations were more likely to be aware (1.15, 1.02-1.30), but had similar treatment and control rates. In Moroccan populations, hypertension awareness (0.79, 0.62-1.00) and treatment levels (0.77, 0.60-0.97) were lower compared with EHPs, while in Turkish populations awareness was lower (0.81, 0.65-1.00).

CONCLUSION

Levels of hypertension awareness, treatment and control differ between EMPs and EHPs. Effort should be made to improve these suboptimal rates in EMPs, aiming to reduce ethnic inequalities in hypertension-mediated complications.

Cardiovascular diseases and their risk factors among Syrian refugees in Turkey

BACKGROUND

Information on the world distribution of cardiovascular disease and its risk factors in refugees/migrants is not available at the same rate for all countries or for different ethnic and socioeconomic groups. Today, Syria's humanitarian catastrophe has become a public health concern, which cannot be ignored.

METHODS

A search was conducted across PubMed and Google Scholar for papers on cardiovascular diseases among refugees/migrants worldwide with a focus on Syrian in Turkey.

RESULTS

The total number of papers identified through the database searches and from reference lists was 486. Of these, 62 were found to be relevant after further screening. A further 42 papers were considered not eligible after full-text, language and data assessments, resulting in a final 20 papers included in the qualitative analysis. These studies discussed several major themes: cardiovascular diseases and their risk factors among refugees/migrants, the effects of changing living conditions on refugees/migrants, the effects of psychological and socioeconomic factors, and the prevention and treatment of cardiovascular diseases in refugees/migrants. The risk of cardiovascular disease varied by country of origin, country of destination, and duration of residence. The findings suggest that cardiovascular diseases and their risk factors are increased for Syrian refugees in Turkey.

CONCLUSION

Raising awareness, prevention, early detection, and good management as well as monitoring and reporting of risk factors are the key components to controlling cardiovascular diseases in refugees. Further studies and greater acquisition of survey data are urgently needed.

Comparison of Hypertension in Migrant and Local Patients with Atherosclerotic Diseases: A Cross-Sectional Study in Shanghai, China

Background

Hypertension and its complications represent major health problems worldwide and are distributed differently in different populations. This study aimed to reveal the differences between two populations of patients with hypertension who had atherosclerotic complications: local residents in and migrants to the city of Shanghai, China.

Methods

We conducted a cross-sectional study among hospitalized patients with hypertension age 21-65 years in Pudong District. We compared the characteristics of local and migrant patients with hypertension, and analyzed the distribution and risk factors of atherosclerotic complications between these groups.

Results

The proportion of young and uninsured patients with hypertension was higher among migrant than local participants. The rates of stroke (15.4% vs. 25.0%, p < 0.05) and coronary heart disease (8.6% vs. 11.7%, p < 0.05) were lower and the rates of other atherosclerotic diseases higher (8.5% vs. 7.9%, p = 0.429) among migrant than local participants. According to logistic regression analysis, age was an important risk factor in both the migrant and local groups for all three atherosclerotic complications investigated. Insurance, diabetes, and frequency of hospitalization could influence the incidence of atherosclerotic complications among local patients with hypertension. Among migrant patients, differences for sex, insurance, marital status, diabetes history, and frequency of hospitalization were not significant.

Conclusions

Our study demonstrated differences in the characteristics, distribution, and risk factors of atherosclerotic complications among migrant and local patients with hypertension. Greater attention in needed for the increasing population of migrants.

Risk Factors and the Usual Source of Care on Non-Adherence to Antihypertensive Drugs in Immigrants with Hypertension

BACKGROUND

Immigrants are vulnerable to suboptimal health care utilization including non-adherence of medication use. Thus, we aimed to identify the potential risk factors of non-adherence and evaluate whether utilizing a usual source of care was associated with medication adherence in immigrants.

METHODS

We utilized the Korea National Health Insurance Claims Database between 2012 and 2015. Cases were immigrants who had antihypertensive prescriptions at the time of hypertension diagnosis in 2012. Controls were native-born Koreans with hypertension who were 1:1 matched to immigrants by age, sex, and Charlson comorbidity index. We used the medication possession ratio for three years to assess the adherence to antihypertensive drugs. The likelihood of non-adherence was evaluated between cases and controls by multivariate linear regression models stratified by age, sex, and number of clinic visits. We assessed the potential risk factors of non-adherence in immigrants by multivariate linear regression and logistic regression models, respectively.

RESULTS

In total, 4114 immigrants and 4114 matched native-born Koreans with hypertension were included. The mean MPR was significantly lower in immigrants (56% vs 70%, p<0.0001). Immigrants showed almost two times the level of non-adherence as native-born Koreans (odds ratio [OR], 2.01; 95% confidence interval [CI], 1.83-2.21). Stratified analyses on non-adherence presented the highest non-adherence (2.28 times) in immigrants in the younger group (30-49 years old) and the lowest non-adherence in immigrants in 65 and old group where the risk was 1.69 times higher than native Korean with the same age. The absence of a usual source of care significantly increased medication non-adherence by 1.31 to 1.58 times among immigrants.

CONCLUSION

When the number of visited clinics increased, the degree of non-adherence increased consistently. Therefore, the systematization of registering with primary care (a usual source of care) might be a modifiable health care strategy to improve health care outcomes in immigrants.

Immigration Emergency in Italy: The Impact of Socioeconomic Status on Blood Pressure Levels and Control

INTRODUCTION

Nowadays there are more than 5 millions of immigrants (8.3% of general adult population) in Italy.

AIM

To evaluate the potential impact of immigration and the possession of a permanent residence on blood pressure (BP) levels and control in a low income population of immigrants from different countries.

METHODS

We evaluated clinical characteristics and social status of adult individuals with known diagnosis of hypertension afferent to the Poliambulatorio della Caritas Diocesana in Rome, Italy, between 2010-2016. Subjects were stratified according to their macro-areas of origin (Europe, Asia, Africa, South-America), housing (with or without house), and immigration status (presence or absence of residence permit). BP levels were measured in three consecutive visits according to recommendations from current European Guidelines.

RESULTS

From an overall population sample of 9827 adult individuals, we initially identified 994 patients with a diagnosis of hypertension (10.1%), among whom 536 (5.4%) had valid BP data. Among these, 50.6% came from Europe, 21.6% from Africa, 24.1% from Asia, and 3.7% from South-America. They were predominantly male (54.7%), middle aged (42.8 ± 12.1 years at arrival and 51.6 ± 10.6 years at first visit) and untreated (72.8%) individuals with baseline systolic/diastolic BP levels of 156.9 ± 22.2/97.3 ± 12.4 mmHg). BP levels remained higher in homeless than in housed people at both visit 2 (150.0 ± 21.8/92.6 ± 12.9 mmHg vs. 142.9 ± 19.3/89.9 ± 11.6 mmHg; P < 0.001) and visit 3 (147.9 ± 22.2/91.7 ± 12.5 mmHg vs. 141.8 ± 19.4/89.2 ± 12.0 mmHg; P = 0.013). We also observed reductions of both systolic and diastolic BP levels compared to baseline values in immigrants stratified according to residence permit, although without relevant differences among groups.

CONCLUSIONS

Beyond conventional risk factors, socio-economic issues, including lack of residence permit or habitation, may affect BP levels and control in frail populations of immigrants, which have been marginally considered before.

Daily urinary sodium and potassium excretion in Chinese first-generation migrants in Italy

BACKGROUND

China has one of the highest salt intake levels in the world, and Chinese people form one of the largest foreign-born communities now living in Europe. The present study was performed to assess 24-hour urinary sodium and potassium excretion in Chinese migrants in Italy and to explore possible associations with hypertension, hypertension awareness, and length of residence in Italy.

METHODS

A cross-sectional evaluation was conducted on 319 first-generation Chinese migrants (154 women and 165 men) aged 18-70 years. Subjects were asked to do a 24-hour urine collection and the relationships of urinary sodium and potassium and arterial blood pressure, hypertension (BP ≥ 140/90 mmHg or anti-hypertensive drug use), hypertension awareness, and years of residence in Italy were investigated with linear or logistic regression analysis.

RESULTS

Sodium excretion was 145.2 mmol/day (95%CI 138.0-152.3) in men, and 134.7 (95%CI 127.6-141.8) in women corresponding to a dietary salt intake of 9.4 g/day (95%CI 9.0-9.9) and 8.8 (95%CI 8.3-9.2) respectively. Potassium excretion was 35.1 mmol/day (95%CI 33.6-36.5), with no significant difference by gender. At multivariable adjusted linear regression analysis body mass index, low education level, and hypertension were positive predictors of sodium urinary excretion; gender (women), and body mass index were positive predictors of potassium excretion. Sodium and potassium excretion were unaffected by hypertension awareness or years of residence in Italy.

CONCLUSIONS

Sodium excretion in Chinese workers is higher than recommended and in line with high salt intake in Italy. Potassium consumption remains low.

Diverging patterns of cardiovascular diseases across immigrant groups in Northern Italy

BACKGROUND

Only fragmentary data are available on the burden of non-communicable diseases among immigrants in Europe, mostly limited to mortality by cause. Aim of the study is to investigate the prevalence of cardiovascular diseases across different immigrant groups in the Veneto Region (North-Eastern Italy).

METHODS

The resident population aged 20-59 was classified according to country of citizenship. The Adjusted Clinical Groups System was adopted to identify selected cardiovascular conditions by linkage of Hospital Discharge Records, Emergency Room visits, Chronic disease registry for copayment exemptions, the Home care database, and drugs reimbursed by the Regional Health Service. Age standardized prevalence rates were compared across population groups, and rate ratios (RR) with 95% confidence intervals (CI) were computed taking the Italian population as reference.

RESULTS

The prevalence of diabetes was higher across all immigrant groups compared to Italians. Specific risk patterns could be identified associated to different ethnicities: South Asian immigrants were at very high risk of diabetes, dyslipidemia, and ischemic heart disease (males RR 2.3, CI 1.9-2.8; females RR 2.0, CI 1.2-3.5). Immigrants from Africa were affected by high rates of hypertension, cerebrovascular diseases, and heart failure, with a more pronounced unfavorable profile among females (hypertension RR 3.0, CI 2.6-3.3; cerebrovascular diseases RR 1.7, CI 1.1-2.7).

CONCLUSIONS

Wide differences in the prevalence of cardiovascular diseases could be detected across immigrant groups. These findings represent a first step towards systematic chronic disease surveillance by ethnicity, a fundamental tool for shaping culturally-tailored prevention strategies.