Baseline characteristics of UK Biobank study population
| UK Biobank cohort (n=259 146) | |
|---|---|
| Age (years) | 55.0±8.1 |
| Male gender | 111 825 (43.2%) |
| Smoking status | |
| Non-smoker | 127 593 (49.2%) |
| Former smoker | 99 255 (38.3%) |
| Light smoker (<10 cigarettes/day) | 15 316 (5.9%) |
| Moderate smoker (10–19 cigarettes/day) | 9320 (3.6%) |
| Heavy smoker (≥20 cigarettes/day) | 7662 (3.0%) |
| Social deprivation (Townsend score) | −1.4±3.0 |
| Ethnic group | |
| White or not recorded | 246 056 (94.9%) |
| Indian | 2757 (1.1%) |
| Pakistani | 788 (0.3%) |
| Bangladeshi | 97 (0.0%) |
| Other Asian | 862 (0.3%) |
| Caribbean | 2162 (0.8%) |
| Black African | 1575 (0.6%) |
| Chinese | 804 (0.3%) |
| Other | 4045 (1.6%) |
| Clinical conditions | |
| Family history of early heart disease | 28 102 (10.8%) |
| Family history of diabetes | 23 161 (8.9%) |
| Type 2 diabetes | 2131 (0.8%) |
| Atrial fibrillation | 912 (0.4%) |
| Rheumatoid arthritis | 2276 (0.9%) |
| Chronic renal disease | 112 (0.0%) |
| Treated with corticosteroids | 1953 (0.8%) |
| Clinical values | |
| Body mass index (kg/m2) | 26.8±3.9 |
| Total cholesterol to high-density lipoprotein cholesterol ratio | 4.1±0.4 |
| Systolic blood pressure (mm Hg) | 136.0±18.2 |
Data are presented as mean±SD for continuous variables and as frequencies (%) for categorical data.