Table 5

Crude prevalence of pre-diabetes and undiagnosed diabetes and crude yield of HbA1c in the UK Biobank in men by age and ethnic group

WhiteSouth AsianBlackChineseOverall
n=19 399/51 436/79 274/38 262n=897/1445/1042/457n=590/1042/538/198n=104/205/145/44n=20 990/54 128/80 999/38 961
n (%)n (%)n (%)n (%)n (%)
Pre-diabetes
Age (years)
 40–44187 (1.0)58 (6.5)49 (8.3)8 (7.7)302 (1.4)
 45–541062 (2.1)148 (10.2)125 (12.0)7 (3.4)1342 (2.5)
 55–643156 (4.0)152 (14.6)102 (19.0)22 (15.2)3432 (4.2)
 65–742212 (5.8)74 (16.2)42 (21.2)8 (18.2)2336 (6.0)
Undiagnosed diabetes
 40–44104 (0.5)22 (2.5)9 (1.5)0 (0)135 (0.6)
 45–54404 (0.8)61 (4.2)31 (3.0)1 (0.5)497 (0.9)
 55–64849 (1.1)44 (4.2)22 (4.1)2 (1.4)917 (1.1)
 65–74440 (1.1)20 (4.4)15 (7.8)1 (2.3)476 (1.2)
Pre-diabetes or undiagnosed diabetes
 40–44291 (1.5)80 (8.9)58 (9.8)8 (7.7)437 (2.1)
 45–541466 (2.9)209 (14.5)156 (15.0)8 (3.9)1839 (3.4)
 55–644005 (5.1)196 (18.8)124 (23.1)24 (16.6)4349 (5.4)
 65–742652 (6.9)94 (20.6)57 (28.8)9 (20.5)2812 (7.2)
 YieldYieldYieldYieldYield
Pre-diabetes
 40–441 in 1001 in 151 in 121 in 131 in 71
 45–541 in 481 in 101 in 81 in 291 in 40
 55–641 in 251 in 71 in 51 in 71 in 24
 65–741 in 171 in 61 in 51 in 61 in 17
Undiagnosed diabetes
 40–441 in 2001 in 401 in 67N/A1 in 48
 45–541 in 1251 in 241 in 331 in 2001 in 29
 55–641 in 911 in 241 in 241 in 711 in 19
 65–741 in 911 in 231 in 131 in 441 in 14
Pre-diabetes or undiagnosed diabetes
 40–441 in 671 in 111 in 101 in 131 in 48
 45–541 in 351 in 71 in 71 in 261 in 29
 55–641 in 201 in 51 in 41 in 51 in 19
 65–741 in 151 in 51 in 41 in 61 in 14

  • Yield refers to the average number needing to be tested to identify one case.

  • HbA1c, glycated hemoglobin; n, number; N/A, not available.