Table 4

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

White
(n by age group)
South Asian
(n by age group)
Black
(n by age group)
Chinese
(n by age group)
Overall
(n by age group)
22 737/66 796/100 352/41 252n=705/1388/1107/359n=668/1513/761/268n=159/357/291/61n=24 269/70 054/102 511/41 940
n (%)n (%)n (%)n (%)n (%)
Pre-diabetes
Age (years)
 40–44118 (0.5)28 (4.0)33 (4.9)2 (1.3)181 (0.7)
 45–541001 (1.5)97 (7.0)185 (12.2)9 (2.5)1292 (1.8)
 55–643692 (3.7)186 (16.8)157 (20.6)41 (14.1)4076 (4.0)
 65–742416 (5.9)72 (20.1)77 (28.7)9 (14.8)2574 (6.1)
Undiagnosed diabetes
 40–4430 (0.1)8 (1.1)6 (0.9)0 (0)44 (0.2)
 45–54183 (0.3)39 (2.8)36 (2.4)3 (0.8)261 (0.4)
 55–64588 (0.6)52 (4.7)32 (4.2)7 (2.4)679 (0.7)
 65–74303 (0.7)17 (4.7)16 (6.0)1 (1.6)337 (0.8)
Pre-diabetes or undiagnosed diabetes
 40–44148 (0.7)36 (5.1)39 (5.8)2 (1.3)225 (0.9)
 45–541184 (1.8)136 (9.8)221 (14.6)12 (3.4)1553 (2.2)
 55–644280 (4.3)238 (21.5)189 (24.8)48 (16.5)4755 (4.6)
 65–742719 (6.6)89 (24.8)93 (34.7)10 (16.3)2911 (6.9)
YieldYieldYieldYieldYield
Pre-diabetes
 40–441 in 2001 in 251 in 201 in 771 in 143
 45–541 in 671 in 141 in 81 in 401 in 56
 55–641 in 271 in 61 in 51 in 71 in 25
 65–741 in 171 in 51 in 41 in 71 in 16
Undiagnosed diabetes
 40–441 in 10001 in 911 in 111N/A1 in 500
 45–541 in 3331 in 361 in 421 in 1251 in 250
 55–641 in 1671 in 211 in 241 in 421 in 143
 65–741 in 1431 in 211 in 171 in 631 in 125
Pre-diabetes or undiagnosed diabetes
 40–441 in 1431 in 201 in 171 in 771 in 111
 45–541 in 561 in 101 in 71 in 301 in 46
 55–641 in 231 in 51 in 41 in 61 in 22
 65–741 in 151 in 41 in 31 in 61 in 15
  • Yield refers to the average number needing to be tested to identify one case.

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