Table 1.
Sociodemographic characteristics of the final study cohort (N = 2 808 477)
| Characteristic | n (%) |
|---|---|
| Ethnicity | |
| White | 1 537 660 (54.75) |
| Indian | 44 693 (1.59) |
| Pakistani | 25 229 (0.90) |
| Bangladeshi | 18 487 (0.66) |
| Other Asian | 27 600 (0.98) |
| Caribbean | 24 835 (0.88) |
| Black African | 42 405 (1.51) |
| Chinese | 9785 (0.35) |
| Other | 48 299 (1.72) |
| Not recorded | 1 029 484 (36.66) |
|
| |
| Geographical region | |
| East Midlands | 146 179 (5.20) |
| East of England | 182 864 (6.51) |
| London | 584 489 (20.81) |
| North East | 101 938 (3.63) |
| North West | 445 295 (15.86) |
| South Central | 365 111 (13.00) |
| South East | 230 681 (8.21) |
| South West | 312 760 (11.14) |
| West Midlands | 298 113 (10.61) |
| Yorkshire & Humber | 141 047 (5.02) |
|
| |
| BMI categorya | |
| Underweight (<18.5 kg/m2) | 22 770 (0.98) |
| Healthy weight (18.5–24.9 kg/m2) | 731 913 (31.45) |
| Overweight (25.0–29.9 kg/m2) | 1 015 095 (43.62) |
| Obese (30.0–39.9 kg/m2) | 521 124 (22.39) |
| Severely obese (≥40.0 kg/m2) | 36 102 (1.55) |
|
| |
| Deprivation quintileb | |
| 1 (most affluent) | 548 305 (19.58) |
| 2 | 550 816 (19.67) |
| 3 | 558 866 (19.96) |
| 4 | 565 215 (20.19) |
| 5 (most deprived) | 576 657 (20.60) |
|
| |
| Smoking statusc | |
| Non-smoker | 1 212 254 (47.00) |
| Ex-smoker | 633 556 (24.57) |
| Light smoker (1–9/day) | 391 036 (15.16) |
| Moderate smoker (10–19/day) | 170 700 (6.62) |
| Heavy smoker (≥20/day) | 171 544 (6.65) |
|
| |
| Diabetic status | |
| No diabetes | 2 482 092 (88.38) |
| Type 1 diabetes | 10 070 (0.36) |
| Type 2 diabetes | 316 315 (11.26) |
|
| |
| Family history of prostate cancer | |
| Yes | 7641 (0.27) |
| No | 2 800 836 (99.73) |
|
| |
| Diagnosis of bipolar disorder or schizophrenia | |
| Yes | 31 717 (1.13) |
| No | 2 776 760 (98.87) |
a
n = 2 327 004 (82.9% of cohort).
b
n = 2 799 859 (99.6% of cohort).
c
n = 2 579 090 (91.8% of cohort). BMI = body mass index.