Sexual Dimorphism for the Association between Vitamin D and Insulin Resistance in Chinese People

Table 4

Association of 25(OH)D with insulin resistance in males and females, respectively.

	25(OH)D (nmol/l)
	Model 1	Model 2	Model 3
Total	−2.07 (−2.95, −1.20)	−1.71 (−2.56, −0.85)	−1.45 (−2.38, −0.52)
Male
BMI < 25 kg/m^2	−1.43 (−3.50, 0.64)	−0.55 (−2.55, 1.44)	−0.37 (−2.44, 1.71)
25 ≤ BMI < 30 kg/m^2	−3.39 (−5.57, −1.22)	−2.94 (−5.09, −0.79)	−2.68 (−4.96, −0.50)
BMI ≥ 30 kg/m^2	−4.96 (−10.30, 0.38)	−2.98 (−8.37, 2.42)	−2.21 (−7.60, 3.18)
Female
BMI< 25 kg/m^2	−0.14 (−1.65, 1.37)	−0.45 (−1.95, 1.05)	−0.75 (−2.29, 0.78)
25 ≤ BMI < 30 kg/m^2	−1.82 (−3.95, 0.30)	−1.94 (−4.05, 0.17)	−1.89 (−4.04, 0.26)
BMI ≥ 30 kg/m^2	−2.91 (−7.23, 1.41)	−3.12 (−7.50, 1.25)	−3.20 (−7.60, 1.21)

Data are unstandardized coefficients (95% confidence interval). Model 1 unadjusted; model 2 adjusted for sex (in total subjects), age, smoking, and drinking; and model 3 adjusted terms for model 2, systolic blood pressure, and BMI.