Table 2.

OR for the associations between serum 25-hydroxyvitamin D (25(OH)D) concentration and measures of adiposity: children and adolescents aged 6–18 years (n 6311), National Health and Nutrition Examination Survey, 2001–2006

	Serum 25(OH)D
	Adequate (>50 nmol/l)		Inadequate (30–50 nmol/l)		Deficient (<30 nmol/l)
Measure of adiposity	OR	95 % CI	OR	95 % CI	OR	95 % CI	P trend
BMI ≥ 85th percentile
Sample size	4054		1813		444
Unadjusted	1·00	Reference	1·66	1·50, 1·84	1·93	1·62, 2·31	<0·001
Adjusted	1·00	Reference	2·11	1·81, 2·45	3·25	2·54, 4·16	<0·001
BMI ≥ 95th percentile
Sample size	4054		1813		444
Unadjusted	1·00	Reference	1·76	1·56, 1·99	2·43	1·99, 2·96	<0·001
Adjusted	1·00	Reference	2·18	1·86, 2·55	3·27	2·55, 4·20	<0·001
BMI*
Sample size	4054		1813		444
Unadjusted	1·00	Reference	2·06	1·81, 2·35	2·95	2·39, 3·63	<0·001
Adjusted	1·00	Reference	2·14	1·83, 2·49	3·28	2·56, 4·19	<0·001
WC ≥ 75th percentile
Sample size	4023		1798		439
Unadjusted	1·00	Reference	1·78	1·57, 2·00	2·29	1·87, 2·81	<0·001
Adjusted	1·00	Reference	2·09	1·81, 2·42	3·22	2·53, 4·10	<0·001
WC ≥ 90th percentile
Sample size	4023		1798		439
Unadjusted	1·00	Reference	1·97	1·72, 2·26	2·55	2·05, 3·18	<0·001
Adjusted	1·00	Reference	2·28	1·93, 2·68	3·38	2·60, 4·39	<0·001
WHtR ≥ 0.5
Sample size	4023		1798		439
Unadjusted	1·00	Reference	1·94	1·71, 2·19	2·57	2·09, 3·15	<0·001
Adjusted	1·00	Reference	2·00	1·72, 2·31	2·97	2·33, 3·78	<0·001

WC, waist circumference; WHtR, waist-to-height ratio; LOD, limit of detection.

Adjusted for age (continuous), gender (male, female), race and ethnicity (Mexican American, other Hispanic, non-Hispanic White, non-Hispanic Black, Other), poverty:income ratio (<1, ≥1), alcohol use (yes or no) and cotinine concentration (<0.01 ng/ml (LOD), 0.01–10 ng/ml, >10 ng/ml).

^*≥30 kg/m² v. <30 kg/m².