Table 1 Characteristics of the full survey and the genetic substudy population
From: Genetic variants of VDR and CYP2R1 affect BMI independently of serum vitamin D concentrations
Parameter | Survey participants (n = 669) | Study population (n = 462) | p-value |
|---|---|---|---|
Age (years ± SD) | 49.62 ± 16.65 | 49.55 ± 16.63 | 0.87 |
Gender (n (%)) | |||
Male | 281 (42%) | 228 (49%) | < 0.0001 |
Female | 383 (58%) | 234 (51%) | |
Height (m ± SD) | 1.69 ± 0.09 | 1.70 ± 0.1 | 0.97 |
Weight (kg ± SD) | 74.9 ± 16.0 | 75.7 ± 15.9 | 0.90 |
BMI (kg/m2 ± SD) | 25.8 ± 4.6 | 26.0 ± 4.5 | 0.88 |
Place of residence (n) | |||
Capital | 153 (23%) | 65 (14%) | 0.47 |
City | 309 (46.5%) | 264 (57%) | |
Village | 202 (30.5%) | 133 (29%) | |
Occupation (n) | |||
Blue collar | 252 (38%) | 179 (39%) | 0.32 |
White collar | 412 (62%) | 283 (61%) | |
t- 25(OH) D (nmol/L ± SD) | 41.8 ± 20.9 | 37.4 ± 17.5 | 0.0002 |
b-25(OH) D (nmol/L ± SD) | 4.8 ± 4.3 | 3.7 ± 2.2 | < 0.0001 |
f- 25(OH) D (pmol/L ± SD) | 11.8 ± 10.3 | 9.2 ± 5.3 | < 0.0001 |
DBP (mg/L ± SD) | 303.8 ± 99.3 | 293.1 ± 107.6 | 0.47 |
PTHi (pg/ml ± SD) | 25.3 ± 16.3 | 26.7 ± 18.4 | 0.20 |