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

	White	South Asian	Black	Chinese	Overall
	n=19 399/51 436/79 274/38 262	n=897/1445/1042/457	n=590/1042/538/198	n=104/205/145/44	n=20 990/54 128/80 999/38 961
	n (%)	n (%)	n (%)	n (%)	n (%)
Pre-diabetes
Age (years)
40–44	187 (1.0)	58 (6.5)	49 (8.3)	8 (7.7)	302 (1.4)
45–54	1062 (2.1)	148 (10.2)	125 (12.0)	7 (3.4)	1342 (2.5)
55–64	3156 (4.0)	152 (14.6)	102 (19.0)	22 (15.2)	3432 (4.2)
65–74	2212 (5.8)	74 (16.2)	42 (21.2)	8 (18.2)	2336 (6.0)
Undiagnosed diabetes
40–44	104 (0.5)	22 (2.5)	9 (1.5)	0 (0)	135 (0.6)
45–54	404 (0.8)	61 (4.2)	31 (3.0)	1 (0.5)	497 (0.9)
55–64	849 (1.1)	44 (4.2)	22 (4.1)	2 (1.4)	917 (1.1)
65–74	440 (1.1)	20 (4.4)	15 (7.8)	1 (2.3)	476 (1.2)
Pre-diabetes or undiagnosed diabetes
40–44	291 (1.5)	80 (8.9)	58 (9.8)	8 (7.7)	437 (2.1)
45–54	1466 (2.9)	209 (14.5)	156 (15.0)	8 (3.9)	1839 (3.4)
55–64	4005 (5.1)	196 (18.8)	124 (23.1)	24 (16.6)	4349 (5.4)
65–74	2652 (6.9)	94 (20.6)	57 (28.8)	9 (20.5)	2812 (7.2)
	Yield	Yield	Yield	Yield	Yield
Pre-diabetes
40–44	1 in 100	1 in 15	1 in 12	1 in 13	1 in 71
45–54	1 in 48	1 in 10	1 in 8	1 in 29	1 in 40
55–64	1 in 25	1 in 7	1 in 5	1 in 7	1 in 24
65–74	1 in 17	1 in 6	1 in 5	1 in 6	1 in 17
Undiagnosed diabetes
40–44	1 in 200	1 in 40	1 in 67	N/A	1 in 48
45–54	1 in 125	1 in 24	1 in 33	1 in 200	1 in 29
55–64	1 in 91	1 in 24	1 in 24	1 in 71	1 in 19
65–74	1 in 91	1 in 23	1 in 13	1 in 44	1 in 14
Pre-diabetes or undiagnosed diabetes
40–44	1 in 67	1 in 11	1 in 10	1 in 13	1 in 48
45–54	1 in 35	1 in 7	1 in 7	1 in 26	1 in 29
55–64	1 in 20	1 in 5	1 in 4	1 in 5	1 in 19
65–74	1 in 15	1 in 5	1 in 4	1 in 6	1 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.