Table 2 Univariate linear regression analyses between the log-transformed 25-hydroxyvitamin D 3 and other parameters
Characteristics | log 25(OH)D3 | |||
|---|---|---|---|---|
Women ( n = 90) | Men ( n = 41) | |||
ß | P -value | ß | P -value | |
iPTH (pmol/L) | −0.379 | < 0.001 | −0.212 | 0.182 |
Age (y) | −0.107 | 0.315 | −0.200 | 0.209 |
Weight (kg) | −0.240 | 0.023 | 0.103 | 0.521 |
Body mass index (kg/m²) | −0.261 | 0.013 | −0.040 | 0.806 |
Waist circumference (cm) | −0.181 | 0.088 | −0.126 | 0.434 |
Hip circumference (cm) | −0.235 | 0.026 | −0.039 | 0.809 |
Waist-to-hip ratio | −0.029 | 0.789 | −0.140 | 0.382 |
Fat-free mass (kg) | −0.137 | 0.199 | 0.268 | 0.090 |
Total body fat (kg) | −0.261 | 0.013 | −0.012 | 0.939 |
Total body fat (%) | −0.283 | 0.007 | −0.088 | 0.584 |
Vitamin D intake (μg/d) | −0.029 | 0.788 | −0.092 | 0.568 |
Calcium intake (g/d) | −0.049 | 0.645 | −0.015 | 0.925 |
Alcohol intake (g/d) | 0.211 | 0.046 | 0.100 | 0.533 |
Sun exposure (min/d) | 0.301 | 0.004 | 0.370 | 0.017 |
Physical activity level | 0.212 | 0.044 | 0.442 | 0.004 |
Current or past smoking a) | 0.007 | 0.946 | −0.520 | < 0.001 |
Vitamin D supplement use a) | 0.134 | 0.207 | 0.172 | 0.283 |