Table 2.

Percentage distribution of 25(OH)D) concentrations (nmol/L) among men/boys and women/girls within age groups and for spring and autumn.

	25(OH)D (nmol/L) Range in Spring Percentage Distribution within Each Age Group					25(OH)D (nmol/L) Range in Autumn Percentage Distribution within Each Age Group
Age in Years by Sex (n)
	<12.5	12.5–<25	25–<50	50–<75	>75	<12.5	12.5–<25	25–<50	50–<75	>75
Boys
2–5 (n = 36)	0	11	33	36	20	0	0	6	44	50
6–14 (n = 175)	0	14	46	34	6	0	1	14	57	28
15–17 (n = 53)	7	36	38	11	8	0	0	26	53	21
Total boys (n =264)	2	18	42	30	8	0	0	16	54	30
Men
18–29 (n = 118)	0	22	46	28	4	0	1	23	37	39
30–39 (n = 209)	2	20	50	18	10	0	1	20	47	32
40–49 (n = 271)	1	16	51	24	8	0	1	19	46	34
50–59 (n = 225)	2	8	45	32	13	0	2	14	48	36
60+ (n = 225)	1	7	35	37	20	0	0	12	45	43
Total men (n = 1048)	1	14	45	28	12	0	1	17	45	37
Girls
2–5 (n = 39)	0	5	36	33	26	0	0	5	54	41
6–14 (n = 164)	1	9	56	29	5	0	1	13	58	28
15–17 (n = 60)	2	10	43	35	10	0	0	17	51	32
Total girls (n = 263)	1	9	50	31	9	0	1	12	56	31
Women
18–29 (n = 233)	1	11	40	30	18	0	1	11	37	51
30–39 (n = 280)	1	12	42	25	20	0	1	14	49	36
40–49 (n = 384)	1	10	40	31	18	0	0	15	45	40
50–59 (n = 335)	0	5	27	37	31	0	1	11	34	54
60+ (n = 285)	0	6	18	31	45	0	0	8	33	59
Total women (n = 1517)	1	9	33	31	26	0	1	12	39	48