Table 1 Sample characteristics.
Whitehall II | UK Biobank | |
|---|---|---|
n (%) | 3733 (100%) | 89,848 (100%) |
Age, years | 68.3 (64.7, 73.8) | 63.5 (56.3, 68.6) |
White ethnicity | 3497 (93.7%) | 87,118 (97.0%) |
Currently in employment | 720 (19.3%) | 55,642 (61.9%) |
Smoking | ||
Never | 1817 (48.7%) | 51,363 (57.2%) |
Former | 1801 (48.2%) | 32,353 (36.0%) |
Current | 115 (3.1%) | 6132 (6.8%) |
Alcohol frequency | ||
Never | 115 (3.1%) | 5000 (5.6%) |
< 1/month | 465 (12.5%) | 8431 (9.4%) |
1–3/month | N/A | 9767 (10.9%) |
2–4/month | 658 (17.6%) | N/A |
1–2/week | N/A | 22,572 (25.1%) |
2–3/week | 1,003 (26.9%) | N/A |
3–4/week | N/A | 23,459 (26.1%) |
4+/week | 1492 (40.0%) | 20,619 (22.9%) |
Avg. sleep duration | ||
< 7 h | 1416 (37.9%) | 19,669 (21.9%) |
7–8 h | 2218 (59.4%) | 64,544 (71.8%) |
> 9 h | 99 (2.7%) | 5635 (6.3%) |
No. of prescribed medications* | 3 (1, 5) | 0 (0, 1) |
BMI | ||
< 18.5 kg/m2 | 45 (1.2%) | 487 (0.5%) |
18.5–25 kg/m2 | 1380 (37.0%) | 34,936 (38.9%) |
25–30 kg/m2 | 1635 (43.8%) | 37,147 (41.3%) |
> 30 kg/m2 | 673 (18.0%) | 17,278 (19.2%) |
Prevalent disease | ||
CVD* | 605 (16.2%) | 6287 (7.0%) |
Cancer* | 389 (10.4%) | 12,610 (14.0%) |
Long-standing illness or disease | N/A | 24,777 (27.6%) |
No. of other diseases* | 1 (0, 1) | 0 (0, 0) |
