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Background

WHO reported that HIV infection transmitted through injection drug use has declined; however, some studies have indicated that HIV infection is still high in this population in many countries and these changes are uncertain. We therefore aimed to evaluate the prevalence and trend of HIV infection in opioid and synthetic users in China.

Methods

We analysed the Drug User Surveillance Database of 3·3 million drug users reported nationwide in China between Jan 1, 2008, and Aug 1, 2016. We included 368 354 individuals who tested for HIV infection for the first time and persistently used opioid or synthetic drugs in our analysis of prevalence and trend of HIV infection. We grouped all participants into three groups according to their HIV status and positions in social networks: individual users (2·6 million users), HIV clustered network (8175 users), and non-HIV network (0·6 million users). The networks were tied by peer relationships, which was defined as both drug users who were reported at the same time, same location, and one of them nominated another user. Relationship of information was extracted from users' text document record, using breadth first search algorithm and the keywords matching method. The study was approved by Peking University Institutional Review Board.

Findings

The prevalence of HIV infection was estimated at 3·1% (7236 of 232?415) in opioid users, which was about six times more than in synthetic users (598 [0·4%] of 135 939; adjusted odds ratio [ORadj] 5·90, 95% CI 5·37–6·47), but reduced to 2·5 times in injection drug users (2·49, 1·28–4·85). From 2008 to 2015, the prevalence in opioid users presented a U-shaped trend, declining from 3·8% (691 of 18?336) in 2008 to 2·3% (745 of 31?980) in 2010 (ORadj 0·59, 95% CI 0·53–0·65) and increasing by 4·2% (1074 of 25 622) in 2015 (1·47, 1·33–1·62), while it maintained a stable increase in synthetic users from 0·2% (12 of 5047) in 2009 to 0·6% (234 of 40?336) in 2015 (ORadj 3·27, 95% CI 1·72–6·21). A total of 226?357 networks were mapped and 1401 networks were identified as HIV clustered networks, which covered 1962 HIV infections. The prevalence of HIV infection in HIV clustered network was 53·4% (1962 of 3675), which was about 25 times (ORadj 25·69, 95% CI 24·75–26·66) more than 2·1% (7990 of 384?430) in individual users. 75·8% (4324 of 5708) of users in the HIV clustered network were exposed to injection drug use compared with 15·2% (39?158 of 257?126) in the non-HIV cluster network and 26·9% (271?241 of 1?008?561) in individual users.

Interpretation

HIV infection in opioid users decreased from 2008–10 but subsequently increased from 2010–15, whereas HIV infection keeps increasing stably in synthetic users. Injection drug use in the HIV cluster network is still a high-risk factor and the effect of current strategies on HIV control in drug users, such as the needle and syringe programmes, need to be further estimated.

Funding

This study was supported by the National Natural Science Foundation of China (grant number 91546203) and the Chinese Ministry of Public Security (0716-1541GA590508).  相似文献   

8.

Background

Women face gender inequality and marginalisation in many aspects of their lives that affect their wellbeing and role in life as important members of society. This study aimed to investigate attitudes towards gender equality in Palestinian youth, and the associated factors.

Methods

We used the Power2Youth 2015 dataset, which consists of a sample of 1353 young people aged 18–29 years (46% males and 54% females) living in the West Bank and Gaza. Households with youths were randomly selected. In the households with more than one youth, a kish grid was used to select the youth participant. Our Prowomen scale was developed to measure participants' attitudes towards gender equality by scoring their responses to 15 questions related to gender equality issues such as the ability and right to work, divorce laws, inheritance rights, leadership, and the right to education. Positive responses to statements favourable to gender equality or biased towards women were given a score of 1, and disagreement was given a score of 0. For statements that were unfavourable to gender equality, disagreement was given a score of 1, and agreement a score of 0. Scores were then summed into one composite score, ranging from 0 to 15. Multivariate linear regression was used to examine the association between individuals' scores on the Prowomen scale (the outcome variable) and gender, age, wealth index, place of residence, education, mother's education and employment, and their score on a scale measuring the perceived influence of women in society (developed using questions relating to women's influence in choosing their spouse, education, and work). Ethics approval for the project was attained from Birzeit University and informed verbal consent was obtained from all participants.

Findings

Of the factors assessed, the main predictors of attitudes towards gender equality were gender, age, place of residence, education, mother's education and employment, and the perceived influence of women in society. The scores ranged between 0 and 15 on the Prowomen scale. On average, men agreed with 2.3 fewer items than women (β=–2·334, p<0·0001). Residents in the West Bank had significantly higher scores than residents in the Gaza Strip (β=0·843, p<0·0001). Residents of camps had significantly higher scores than residents of urban areas (β=0·783, p<0.0001). Respondents educated to beyond secondary level supported approximately one additional item (β=0·979, p<0·0001) compared with those educated to below secondary level. Mother's education and employment were also significantly and positively associated with scores on the Prowomen scale. Youths whose mothers had completed secondary education or higher supported approximately one additional item on the scale compared with youths whose mothers were educated to below secondary level (β=0·837, p<0·01). Respondents whose mothers were employed also supported approximately one additional item (β=0·923, p<0·01). Each time respondents reported that they believed women had influence, they supported approximately 0·3 items on the Prowomen scale (β=0·269, p<0·001).

Interpretation

Our results highlight the need to target men with awareness programmes relating to gender equality. Women's education, and that greater involvement and inclusion of women in society and in the labour market can potentially foster more favourable attitudes towards equality.

Funding

The research that produced the Power2Youth dataset received funding from the European Union's Seventh Framework Programme (FP7/2007–2013) under grant agreement number 612782. Data analysis and production of the Abstract was supported by the Arab Fund for Economic and Social Development.  相似文献   

9.

Background

The Chinese government approved the Outline of the Healthy China 2030 (HC2030) Plan in 2016, and made public health a priority for all future economic and social development. Studies have demonstrated the importance of investment in health care throughout the 8000 days that it takes for a human to develop, on reducing the disease burden in this group. Therefore, as well as children, adolescents should be recognised as an essential target population for health-care investment, and HC2030 plans to achieve key goals in adolescent health. This study aims to explore the gaps in adolescent health care that must be bridged, and to examine experiences from previous policies for lessons that will help the goals of HC2030 in adolescent health to be realised.

Methods

Policies relating to adolescent health issued by the Chinese government during the past three decades were reviewed. Data from the Global Burden of Disease study (1990–2016) and seven cycles of national successive cross-sectional survey, the Chinese National Survey on Students' Constitution and Health (1985–2014), were used. Trends and geographical distribution of essential indicators, including overweight and obesity, stunting, poor vision, oral health, physical activity, and smoking, were analysed in students aged 10–19 years who were selected from primary and secondary schools in 31 provinces of mainland China using a multistage cluster sampling method. The current situation was compared with the targets of the HC2030 to identify gaps between the two. This study was approved by the Ethic committee of Peking University Health Science Center (IRB00001052-18002) and informed verbal consent was obtained from participants or their guardians.

Findings

Policies issued by the Chinese government have contributed to great improvements in adolescent health. For example, all-cause mortality has halved in the past 26 years, and the prevalence of stunting declined from 16·1% in 1985 to 2·8% in 2014. However, critical challenges to reaching the goals of HC2030 were also observed. The prevalence of overweight and obesity increased from 1·1% in 1985 to 18·2% in 2014, and only 1·6% of adolescents in 2014 had excellent physical fitness based on the National Student Physical Fitness Standard. According to the goals of HC2030, the increasing prevalence of overweight and obesity should be controlled, and 25% of adolescents should have excellent physical fitness in 2030. Thus, there is a substantial gap to be bridged by 2030. Additionally, the geographical imbalance in health achievements is substantial (eg, the prevalence of stunting was 0.48% in Beijing, but 11·1% in Guizhou province in 2014).

Interpretation

Although great achievements have been obtained, our findings call for strengthened practical policies to improve adolescent health, reduce the geographical imbalance in health achievements, and to achieve the goals of HC2030.

Funding

This work was supported by the National Natural Science Foundation (81673192 to JM and 81773454 to ZZ), and the Excellent Talents Fund Program of Peking University Health Science Center (BMU2017YJ002 to BD).  相似文献   

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BackgroundPrevious studies, mainly conducted in laboratory experiments, showed there are associations between the perception of acoustic environments (ie, soundscapes, as per the International Organization for Standardization [ISO] 12913-1:2014 definition) and measures of individual health and wellbeing. The aim of this study was to confirm these findings in more ecologically realistic settings, by exploring associations between soundscapes and wellbeing via a questionnaire campaign.MethodsStudy design We performed a socioacoustic field survey with adult volunteers from members of the public who we approached across seven public spaces in London (UK), two in Venice (Italy), and two in Granada (Spain), including parks, urban squares, and commercial streets. Questionnaires gathered individual data about self-reported soundscape experience and wellbeing. Analysis The soundscape assessment protocol relied on the ISO/TS 12913-2:2018, whereas wellbeing measures were based on the WHO-five well-being index (WHO-5). A k-means cluster analysis was performed on the scores of the 15-item soundscape questionnaires, resulting in a two-group stratification of the sample into positive and negative soundscape experiences. The primary outcomes were WHO-5 scores and soundscape experience cluster membership.FindingsWHO-5 scores were computed for 825 (97%) of 849 surveyed participants following WHO instructions. An independent-samples t test showed statistically significant differences in WHO-5 scores between the groups who had a positive (n=445) or negative (n=380) soundscape experience; t(823)=–3·578; p<0·001. The positive group had higher WHO-5 scores (mean 63·5 [SD19·1]) than the negative group (mean 58·7 [18·9]).InterpretationTo the best of our knowledge, this is the first field study to explore associations between (perceived) soundscapes and self-reported measures of wellbeing. Although no causal effects can be established at this stage, results suggest that people with higher levels of wellbeing are more likely to report positive soundscapes, whereas people with lower levels of wellbeing might have a more negative attitude towards the acoustic environments. Self-reported data should be interpreted with caution: to contain any consequent bias, future studies might consider non-participatory methods of investigation and look at temporal effects in longitudinal designs. Overall, these findings highlight the importance of taking into account personal traits when characterising the quality of urban soundscapes and complementing conventional assessments by decibel-related metrics.FundingEuropean Research Council Advanced Grant (no 740696) on Soundscape Indices.  相似文献   

11.

Background

In high-income nations, men who have sex with men (MSM) are at increased risk of shigellosis. A sublineage of Shigella flexneri serotype 3a was recently shown to have spread worldwide in MSM, driven by mobilisable azithromycin resistance. Since then, the serotype 2a and the species S sonnei have become epidemic in the UK. We aimed to determine whether these subsequent outbreaks were also attributable to epidemic sublineages in MSM and mobilisable antimicrobial resistance.

Methods

We applied whole-genome sequencing to a random cross-section of S flexneri 2a (n=176) and S sonnei (n=188) isolates submitted to the UK national reference laboratory between 2004 and 2014 (10% and 2% of travel-associated and 20% and 10% of domestically acquired cases, respectively). Phylogenetic analysis and patient data (date of illness, age, sex, travel history) were combined to identify potential MSM-associated sublineages, and antimicrobial resistance determinants were compared among S sonnei, S flexneri 2a, and pandemic S flexneri 3a.

Findings

Shorter phylogenetic distances (more closely related isolates) were statistically associated with male–male patient pairs for both S sonnei and S flexneri 2a. For S flexneri 2a, this association manifested as a single low-diversity sublineage containing 47 of 176 isolates collected over the epidemic window (2012–2014) mainly (43 of the 47 isolates) from 16–60-year-old male patients without recent travel. This lineage was associated with azithromycin resistance (odds ratio 25·8, p<0·0001) carried by an antimicrobial resistance determinant identical to that found in the pandemic S flexneri 3a sublineage. For S sonnei there were multiple low-diversity sublineages with similar patient profiles, some of which were associated with this azithromycin resistance determinant.

Interpretation

These results suggest that outbreaks of S flexneri 2a and S sonnei were associated with MSM. The mobilisation of azithromycin resistance between S flexneri 3a, S flexneri 2a, and S sonnei indicates that antimicrobial resistance has a role in driving these epidemic waves. The presence of a single resistance determinant associated with all three epidemics suggests that future antimicrobial resistance surveillance might be enhanced by focusing at the level of genetic determinants rather than pathogens.

Funding

Wellcome Trust, Public Health England.  相似文献   

12.

Background

In China, the reported incidence of workplace violence in hospitals has been increasing. Most research has focused on secondary and tertiary care facilities. We aimed to determine the incidence of workplace violence and its aftermath in county and township hospitals and community health centres in Zhejiang Province.

Methods

A cross-sectional survey using stratified cluster sampling was carried out at 18 hospitals (eight county hospitals and ten township hospitals or community health centres) in Zhejiang Province from July 27, 2016 to Jan 20, 2017. Questionnaires were distributed to all health workers (including physicians, nurses, medical technicians, and administrative staff) present on the day of the survey. Ethical approval was obtained from Zhejiang University School of Public Health.

Findings

2018 out of 2303 participants completed questionnaires from 596 men and 1417 women. In the past year, 140 (7%) respondents had experienced physical attacks and 384 (19%) physical threats. Men experienced around twice as many physical attacks (59 [10%] vs 80 [6%] of women; p=0·001), and significantly more threats than females (132 [22%] vs 252 [18%]; p=0·025). Doctors were most likely to be victims of physical attacks, and the commonest location was the emergency department. Most respondents did not report the physical attack (117 [85%] respondents), mainly because they regarded it as pointless (70 [52%] respondents) or didn't know who to report to (32 [24%] respondents). Of all those attacked or threatened, 312 (61%) wanted to quit direct patient care. In terms of impact, 413 [80%] victims said they had repeated, disturbing memories of the attack, 498 [97%] said they had become highly vigilant, and 386 [75%] were fearful dealing with difficult cases. Only four [3%] were satisfied with the way the incident was handled.

Interpretation

Workplace violence is common at lower-level health facilities. The lack of a formal response to workplace violence implies an institutional tolerance which is of great concern. Guidelines for management of workplace violence need to be instituted in primary care facilities.

Funding

Zhejiang University Zijin Talent Programme.  相似文献   

13.
BackgroundAntimicrobial resistance (AMR) is a global health crisis. It is well established that hospital wastewater can contain organisms that are on the WHO priority list of antibiotic-resistant organisms. We aimed to use metagenomics to study whether the abundances of resistance genes in hospital wastewater reflects clinical activity within the hospital.MethodsHospital wastewater was collected over a 24-h period in June, 2017 from multiple collection points representing different specialties within a tertiary hospital site in Scotland, UK and simultaneously from community sewage works. High throughput shotgun sequencing was done using Illumina HiSeq4000. Sequence reads were assigned taxonomically and to the AMR genes in the ResFinder database. The measured AMR gene abundances were correlated to hospital antimicrobial usage in defined daily doses per 100 occupied bed-days, mean patient length of stay in hospital, mean patient age per hospital collection point, and resistance levels in clinical isolates.Findings1047 bacterial genera and 174 different AMR genes were detected across all samples. Microbiota composition and AMR gene abundance and diversity varied between each collection point and AMR gene abundance was higher in hospital wastewater than in community influent. The composition of AMR genes correlated with microbiota composition (Procrustes analysis, p=0·002). Increased antimicrobial consumption at a class level was associated with higher AMR gene abundance within that class in hospital wastewater (incidence rate ratio 2·80, 95% CI 1·2–6·5, p=0·016). Prolonged mean patient length of stay was associated with higher total AMR gene abundance in hospital wastewater (2·05, 1·39–3·01, p=0·0003). No overall association was found between resistance in clinical isolates at an antimicrobial class level and AMR gene abundance in hospital wastewater.InterpretationAntimicrobial usage is a major driver of AMR gene outflow from hospitals into the sewage environment. The positive relationship between length of stay and AMR gene abundance is consistent with prolonged admission being a risk factor for carriage and infection with resistant microorganisms. Our findings show that hospital wastewater does reflect inpatient activity. With further evaluation this method might represent a useful surveillance tool to monitor hospital AMR gene outflow and guide environmental policy on AMR.FundingAcademy of Medical Sciences.  相似文献   

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Background

Antimicrobial resistance (AMR) is one of the greatest threats to public health in China. The primary cause of AMR is antibiotic misuse, especially used for self-limiting illnesses. Little is known about regional differences of antibiotic-misuse behaviors in China. We aimed to explore such behaviors among university students in western and eastern China.

Methods

The participants were recruited from universities in Guizhou, a less developed province in western China, and from Zhejiang, a more developed province in eastern China, using a cluster random sampling method. A validated, self-administered questionnaire was designed to collect data, and the χ2 test and logistic regression were adopted to assess the associations between region and antibiotic misuse.

Findings

A total of 2073 university students from Guizhou and 1922 from Zhejiang completed questionnaires. Students in Guizhou had lower household income, parents' education, and urban residence proportion than those in Zhejiang. Compared with those in Zhejiang, students in Guizhou had higher antibiotic use prescribed by doctors (79·8% vs 56·2%) and self-medication (33·0% vs 16·1%). The students in Guizhou were more likely to buy over-counter antibiotics (73·9% vs 63·4%), ask for antibiotics from doctors (21·4% vs 15·6%), and use antibiotics prophylactically (29·9% vs 15·7%). Adjusted models also showed that less developed region was associated with higher antibiotic misuse behaviours, including antibiotic use prescribed by doctors (odds ratio 2·95; 95% CI 1·68–5·18; p<0·0001), self-medication (3·00; 1·84–4·90; p<0·0001), buying over-counter antibiotics (1·71; 1·36–2·15; p<0·0001), and taking antibiotics prophylactically (2·28; 1·89–2·76; p<0·0001).

Interpretation

Misuse of antibiotics for self-limiting illnesses by well-educated young adults was very high in these two regions but most serious in less-developed western China. A campaign is urgently needed for rational prescribing of antibiotics by doctors, enforcing restrictions on over-the-counter antibiotics, and to educate the general public about the management of self-limiting illness.

Funding

Zhejiang University Zijin Talent Programme.  相似文献   

15.
BackgroundDementia and cardiovascular disease generate enormous health and social-care costs and have shared risk factors. Following decades of cardiovascular disease mortality declines in England, improvements slowed after 2011. We investigated the potential economic implications of this slowdown.MethodsWe used the IMPACT better aging model—an open-cohort, stochastic Markov model. We synthesised trends in cardiovascular disease incidence and mortality, dementia, and disability (defined as reported diagnosis, functional impairment, or measured cognitive impairment) from the English Longitudinal Study of Ageing (ELSA) and Office for National Statistics data. We projected trends for adults aged 35–100 years in England and Wales from 2019–29. We modelled undiscounted health and social-care costs (primary outcome), and quality-adjusted life-years (QALYs) under the following two scenarios: age-specific cardiovascular disease incidence continues to decline, recommencing previous downward trends (scenario one); or age-specific cardiovascular disease incidence plateaus after 2006, continuing recent trends, assuming changes in mortality reflect incidence 5 years before (scenario two). We linked 85% of ELSA participants to their Hospital Episode Statistics (HES) data, which were costed and calibrated to national estimates. Age-related social-care costs were estimated by use of reported contact hours from ELSA combined with standard reference costs. Standard catalogues were used for QALY weights.FindingsIn scenario one, changes in population size and health were projected to increase health-care costs by around 12% between 2019 and 2029, from £93·0 billion to £104·6 billion per year (in 2019 prices). Social-care costs were projected to increase by around 27%, from £8·0 billion to £10·2 billion per year. In scenario two, health-care costs were projected to increase by around 15%, from £95·3 billion to £109·6 billion, and social-care costs by around 30%, from £8·2 billion to £10·7 billion, between 2019 and 2029. The overall net monetary cost of this slowdown in cardiovascular disease decline was £17·5 billion per year (made up of 200 000 QALYs and £5·5 billion in health and social-care costs).InterpretationWe predict social-care costs will grow twice as fast as health-care costs over the next decade, even if cardiovascular disease occurrence continues to decline. Understanding the scale of the future health and social-care funding challenge might support proactive policy making. This study represents the first time ELSA data have been linked with HES data. However, we did not assess changes in health and social-care efficiency over time or the effect of spending on improving health.FundingBritish Heart Foundation  相似文献   

16.

Background

Future progress against tuberculosis in China will likely rely on improved detection, particularly in rural areas where prevalence remains high. The ability of rural providers to correctly diagnose Tuberculosis is largely unknown, as are the potential effects on tuberculosis patients of health-system reforms promoting initial contact with grassroots providers.

Methods

We employed unannounced standardised patients presenting with classic pulmonary tuberculosis symptoms in a representative survey of village, township, and county level providers in three provinces and assessed provider management of standardised patients against international and national standards of care. We then measured the gap between knowledge and practice by comparing doctor care of standardised patients to their performance in clinical vignettes of an identical presumptive tuberculosis case. Finally, we simulated the management of patients at the health-system level under alternative managed care policies accounting for provider referrals.

Findings

In July, 2015, we successfully completed 274 standardised patient interactions. Of 46 interactions in village clinics, 13 (28%) were correctly managed (95% CI 17–43%), compared with 79 (38%) of 207 in township health centers (32–45%) and 19 (90%) of 21 in county hospitals (71–97%). The same providers were 45 percentage points (95% CI 37–53%) more likely to correctly manage the same case in vignettes. Under existing policy, which allows patients to freely choose initial providers, simulations suggest that 40% (95% CI 34–47%) of patients encountering the health system are correctly managed. This would reduce to 16% with gatekeeping from village clinics and to 37% from township centers.

Interpretation

We uncovered important quality deficits among grassroots providers in the management of a case of presumptive tuberculosis and a large gap between provider knowledge and practice. In view of the current quality of care, reforms encouraging first contact in village clinics could reduce the rate of detection of patients with tuberculosis.

Funding

Fundamental Research Funds for the Central Universities and the Research Funds of Renmin University of China (2015030245), the 111 Project (B16031), the National Science Foundation of China (71473152), and the Department of Science and Technology of Shandong Province (BS2012SF010).  相似文献   

17.

Background

A longer time in consultation with doctors in ambulatory care has been associated with better quality of care. Patient experience is of great concern to policy makers and is linked with health-care quality. However, the relationship between consultation length and patient experience remains unclear. We aimed to investigate the effect of consultation length on patient experience, based on analysis of a cross-sectional nationwide patient survey data in China.

Methods

We obtained patient survey data from a strati?ed nationwide survey sample that covered 136 tertiary hospitals in China. Patient-estimated consultation length and associated patient experience data were collected by questionnaire after each patient attended a face-to-face consultation with a doctor. The consultation experience was rated on a 5-point scale. We applied a two-piecewise linear regression model to examine the saturation effect of the consultation length on patient experience (consultation score), using a smoothing function, while age, sex, education, and profession were adjusted in the model, then estimated the turning point that gave the maximum model likelihood by using trial and error.

Findings

Between Dec 18, 2017, and Dec 30, 2017, 27?721 patients, aged 15–85 years, were eligible and selected for inclusion. The median patient-reported duration of face-to-face ambulatory care consultation was 10 min (IQR 5–12), and the mean score of the consultation experience rated by the patient was 4·25 (SD 0·83; 95% CI 4·24–4·26) on the 5-point scale. After adjusting for potential confounders including age, sex, education, and profession, there was a non-linear relationship between consultation length and measure of patient experience after smooth curve fitting. A turning point at 8 min was identified in the modelling process. Below this point, there was a higher probability of rating a consultation score above average with longer consultation length (odds ratio [OR] 1·28, 95% CI 1·26–1·30, p<0·001). After this point, the OR changed to 1·03 (95% CI 1·02–1·04, p<0·001). There was a significant difference in patient experience measure before and after this consultation length turning point (p<0·001).

Interpretation

Consultation length was associated with a measure of patient experience in a non-linear pattern. Longer consultations might not be required to achieve better patient experience, but an adequate consultation should not be shorter than 8 min. Future research about the appropriateness of consultation length for varies ambulatory care institutions would be of benefit.

Funding

National Natural Science Foundation of China (71532014), National Health Commission of China  相似文献   

18.
BackgroundDespite international migrants comprising 15·6% of the English population, there are no large-scale studies of migrant health in UK primary care electronic health records (EHRs). Developing and validating a migration phenotype (a transparent reproducible algorithm based on EHRs to identify migrants) is necessary to determine the feasibility of using EHRs for migration health research. This study aims to develop and validate a migrant phenotype in Clinical Practice Research Datalink (CPRD), the largest UK primary care EHR.MethodsThis is a population-based cohort study of individuals of any age in CPRD between Jan 1, 2007, and Feb 29, 2016, with a diagnostic Read term indicating international migration. We describe completeness of recording of migration: percentage of individuals recorded as migrants over time. We also describe representativeness of the cohort (age, sex, and geographical origin) compared with data from the Office of National Statistics (ONS; country of birth and the 2011 English Census).Findings325 391 (3·4%) of 9,448,898 individuals in CPRD had at least one of 440 terms indicating international migration. The cohort was mostly female (53·7% [174 883/325 391] overall; 52·4% [55 734/106 462] in 2011), which is similar to ONS 2011 census data (51·7 [3 791 375/7 337 139]). The percentage of migrants per year increased from 1·2% (69 046/5 716 075) in 2007 to 2·8 (154 525/5 427 745) in 2013, following a similar trend to ONS migration data (11·7% [5 927 000/50 714 000] in 2007; 13·7% [7 285 000/53 164 000] in 2013). Proportions were significantly lower in CPRD (χ2 test; p<0·0001). The highest percentages of migrants were in the 25–34-year-old band (4·6% [30 549/668 864] in CPRD; 25·9% [1 851 952/7 160 102] in ONS). Migrants were mostly born in Europe (35·4% [10 316/29 113] in CPRD; 36·5% [2 675 003/7 337 042] in ONS) or the Middle East and Asia (34·5% [10 037/29 113] in CPRD; 34·5% [2 529 137/7 337 042] in ONS).InterpretationWe created a cohort of international migrants in England that is broadly representative in terms of age, sex, and geographical region of origin. Future validation work should explore representativeness by ethnicity and deprivation. Potential reasons for undersampling compared with ONS data include insufficient recording and poor health-care access. Nonetheless, the large cohort size provides sufficient power to study a range of health-care analyses in this potentially underserved population.FundingWellcome Trust (approvals [CPRD ISAC 19_062R]; REC 09/H0810/16).  相似文献   

19.
BackgroundTaxing harmful products—such as tobacco, sugar, or alcohol—is a valuable way to improve population health. However, it is argued that excise duties on goods are regressive, because the payment burden falls on the poorest people. The extent to which distributional equity is incorporated into evaluations of the (potential or observed) effect of such taxes is unclear. The primary outcome of this systematic review of evaluations investigating taxation on tobacco, sugar-sweetened-beverages (SSBs), or alcohol was the proportion of evaluations that have considered distributional equity. Secondary aims included identifying methods used to incorporate equity, and summarising the reported distributional effects, for both costs and health benefits.MethodsA literature search was done using three databases: Medline, NHS Economic Evaluation Database, and EconLit. The full list of search terms is included in the appendix. We included studies published in English, from Jan 1, 1946, to May 20, 2019. Studies that did not explicitly quantify both costs and benefits in terms of health were excluded. Two authors independently reviewed each study to determine inclusion. Citation tracking was used to identify remaining studies, and appraisal for risk of bias in included evaluations was done against validated tools. This systematic review was prospectively registered on PROSPERO (CRD42019137409).FindingsOf 4656 search results, 69 studies were included. 45 combined economic methods with epidemiological modelling. Tobacco was most commonly investigated, with 35 evaluations. Of these 35, 14 (40%) considered distributional equity, with six (27%) of 22 included SSB evaluations doing the same, and none for alcohol. A tobacco tax favoured lower-income groups in the distribution of costs in all 14 evaluations, and for health benefits in eight evaluations. For SSBs, four evaluations found costs to favour low-income groups, with three finding the same distribution for health benefits.InterpretationDespite recommendations, evaluations of health taxes do not routinely consider distributional equity. Evaluations for alcohol taxation are particularly weak. Where investigated, the majority of evidence found tobacco taxation to favour low-income groups, but the little evidence for SSBs is mixed. Future evaluations of health taxes must incorporate distributional equity, if they are to be useful to policy makers.FundingNone.  相似文献   

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