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- Title
Social Class Differences in Secular Trends in Established Coronary Risk Factors over 20 Years: A Cohort Study of British Men from 1978-80 to 1998-2000.
- Authors
Ramsay, Sheena E.; Whincup, Peter H.; Hardoon, Sarah L.; Lennon, Lucy T.; Morris, Richard W.; Wannamethee, S. G.
- Abstract
Background: Coronary heart disease (CHD) mortality in the UK since the late 1970s has declined more markedly among higher socioeconomic groups. However, little is known about changes in coronary risk factors in different socioeconomic groups. This study examined whether changes in established coronary risk factors in Britain over 20 years between 1978-80 and 1998-2000 differed between socioeconomic groups. Methods and Findings: A socioeconomically representative cohort of 7735 Britishmen aged 40-59 years was followed-up from 1978-80 to 1998-2000; data on blood pressure (BP), cholesterol, bodymass index (BMI) and cigarette smoking were collected at both points in 4252 survivors. Social class was based on longest-held occupation in middle-age. Compared with men in nonmanual occupations, men in manual occupations experienced a greater increase in BMI (mean difference= 0.33 kg/m²; 95%CI 0.14-0.53; p for interaction= 0.001), a smaller decline in non-HDL cholesterol (difference in mean change= 0.18 mmol/l; 95%CI 0.11-0.25, p for interaction≤0.0001) and a smaller increase in HDL cholesterol (difference inmean change= 0.04 mmol/l; 95%CI 0.02-0.06, p for interaction≤0.0001). However, mean systolic BP declined more in manual than non-manual groups (difference in mean change= 3.6; 95%CI 2.1-5.1, p for interaction≤0.0001). The odds of being a current smoker in 1978-80 and 1998-2000 did not differ between non-manual and manual social classes (p for interaction = 0.51). Conclusion: Several key risk factors for CHD and type 2 diabetes showed less favourable changes in men in manual occupations. Continuing priority is needed to improve adverse cardiovascular risk profiles in socially disadvantaged groups in the UK.
- Subjects
CORONARY disease; TYPE 2 diabetes; VITAL signs; TYPE A behavior; DEATH (Biology)
- Publication
PLoS ONE, 2011, Vol 6, Issue 5, p1
- ISSN
1932-6203
- Publication type
Article
- DOI
10.1371/journal.pone.0019742