Table 4 Crude and adjusted Odds ratios for serum 25 OHD levels < 20 ng/mL (50 nmol/L)) according to BMI categories stratified by gender

all

 < 25(ref)

25 to < 30

1.1

1.1–1.2

0.040

1.1

0.9–1.2

0.2

 ≥ 30

1.2

1.1–1.4

0.001

0..93

0.9–1.2

0.2

male

 < 25(ref)

25 to < 30

1.1

1.1–1.4

0.013

1.2

1.1–1.4

0.01

 ≥ 30

1.4

1.4–2

 < 0.001

1.4

1.2–1.6

0.001

female

 < 25(ref)

25 to < 30

0.9

0.8–1.2

0.850

1.1

0.9–1.3

0.160

 ≥ 30

0.9

0.8–1.2

0.670

1.1

0.9–1.4

0.065