Table 3.

Association of vitamin D levels with regularity of cycle, age, and BMI

		N (%)	25-hydroxy vitamin D*	OR (95% CI)	p-value
< 20 ng/ml		96 (57.1)	-
$\ge$ 20 ng/ml		72 (42.9)	-
Irregular cycle
	No	83 (50.0)	21.90 $\pm$ 6.15	13.32 (5.79-30.61)	$\le$ 0.001**
	Yes	83 (50.0)	14.56 $\pm$ 8.76
Age group (yr)
	18-21	16 (9.5)	16.57 $\pm$ 8.63	0.23
	22-29	102 (60.7)	18.77 $\pm$ 7.71	0.85 (0.13-5.34)	0.86
	30-39	34 (20.2)	18.08 $\pm$ 11.22	2.28 (0.54-9.50)	0.26
	$\ge$ 40	16 (9.5)	16.80 $\pm$ 5.06	3.53 (0.69-18.09)	0.13
BMI (kg/m ${}^2$ ) group
	$<$ 18.5 (underweight)	13 (7.7)	19.61 $\pm$ 5.54	0.16
	18.5-24.9 (normal)	79 (47.0)	19.55 $\pm$ 8.46	3.39 (0.54-21.32)	0.19
	25-29.9 (overweight)	61 (36.3)	16.40 $\pm$ 8.34	4.55 (1.04-19.75)	0.04
	$\ge$ 30 (obese)	15 (8.9)	17.58 $\pm$ 9.35	2.42 (0.52-11.19)	0.26
*Data presented as Mean $\pm$ SD. BMI: Body mass index, **P $<$ 0.001 so is highly significant. Association estimated through binary logistic regression and results expressed in p-values