Table 2.
Unadjusted diabetes incidence rates (95% CI) per 1000 person years by BMI and waist circumference category in men and women: SABRE study, London, 1988–1990 (baseline) to 2008–2011
| Men |
Women |
|||||
|---|---|---|---|---|---|---|
| European | South Asian | African-Caribbean | European | South Asian | African-Caribbean | |
| Number (%) | 1054 (78) | 706 (84) | 188 (56) | 302 | 136 | 146 |
| Number of cases | 156 | 253 | 56 | 40 | 29 | 44 |
| Person years of follow-up | 20 400 | 12 000 | 3400 | 5600 | 2400 | 2400 |
| Overall incidence rates/1000 person years | 7.4 (6.3, 8.7) | 20.8 (18.4, 23.6) | 16.5 (12.7, 21.4) | 7.2 (5.3,9.8) | 12.0 (8.3, 17.2) | 17.5 (13.0, 23.7) |
| BMI (kg/m2) | ||||||
| < 23 | 2.9 (1.6, 5.3) | 9.5 (6.5, 13.9) | 6.1 (2.0, 18.9) | 3.4 (1.5, 7.7) | 9.4 (3.9, 22.6) | 4.8 (0.7, 33.8) |
| 23 to < 25 | 4.0 (2.6, 6.2) | 17.1 (12.9, 22.4) | 10.4 (5.2, 20.7) | 1.8 (0.5, 7.2) | 2.2 (0.3, 16.0) | 16.4 (6.8, 39.4) |
| 25 to < 27.5 | 6.8 (5.1, 9.2) | 21.3 (17.1, 26.5) | 17.1 (10.6, 27.5) | 6.6 (3.4, 12.7) | 9.4 (3.9, 22.6) | 6.3 (1.6, 25.3) |
| 27.5 to < 30 | 10.3 (7.3, 14.6) | 32.2 (24.4, 42.5) | 18.8 (11.5, 30.6) | 11.0 (5.2, 23.0) | 14.3 (6.4, 31.9) | 12.1 (6.3, 23.2) |
| 30+ | 17.1 (12.4, 23.7) | 39.2 (27.0, 56.7) | 30.7 (15.3, 61.3) | 23.8 (14.4,39.5) | 22.5 (12.5, 40.6) | 27.2 (17.4, 42.7) |
| Waist circumference (cm) | ||||||
| < 80 | 2.5 (1.3, 5.8) | 5.4 (2.4, 12.0) | 3.1 (0.8, 12.2) | 4.1 (2.4, 6.9) | 9.0 (4.7, 17.4) | 6.8 (2.8, 16.3) |
| 80 to < 90 | 4.5 (3.2, 6.4) | 14.8 (11.6, 18.9) | 20.5 (13.9, 30.3) | 7.1 (3.7,13.7) | 8.8 (4.2, 18.4) | 14.1 (7.8, 25.4) |
| 90 to < 100 | 8.3 (6.4,10.8) | 23.6 (19.5, 28.4) | 14.2 (8.7, 23.1) | 14.8 (6.6, 32.9) | 19.5 (10.2,37.5) | 23.4 (13.6, 40.3) |
| 100+ | 15.2 (11.6, 19.8) | 37.2 (29.5, 46.9) | 30.5 (17.3, 53.8) | 29.1 (16.1,52.5) | 23.5 (8.8, 62.7) | 40.6 (23.6, 69.9) |