… The study population comprised a 1% sample of the population of England and Wales. The
sample was representative of the population for age, sex, social class, and housing tenure, …

… a prospective cohort study in a large population of primary care patients using version 24 of
the general practice research database, QResearch. All practices in England and Wales that …

… This article is based upon a secondary analysis of three successive cohorts of the Youth
Cohort Study of England and Wales and examines the effects of social class and ethnicity on …

… (ONS) Longitudinal Study, which … England and Wales. The initial sample was drawn from
the 1971 census.14 ,15 For this investigation, the study was restricted to members of the cohort …

… Study design and data sources In this observational cohort study, we report analyses of data
for England and Wales from the National Joint Registry for England, Wales, Northern Ireland…

… educational participation from the Youth Cohort Study of England and Wales (YCS). As noted
… The following sections begin with an overview of post-16 education in England and Wales …

… In this study, we have made use of the extensive information contained in the Youth Cohort
Studies, supplemented with labour market data from other sources, to re-examine the role …

… This study has several strengths. We included data from all patients undergoing surgery
in England and Wales during the first wave of the COVID-19 pandemic; thus, our results …

… Study design and data source We carried out a prospective cohort study in a large population
of primary care patients from an open cohort study using the QResearch database (version …

… TRE for England and the SAIL Databank. The deidentified data used in this study were made
… Data used in this study are available in the SAIL Databank at Swansea University, United …