Table 3.
Spearman correlations between vitamin D intake and relevant parametersa
| Vitamin D intake (µg/day) | ||
|---|---|---|
| r S | p | |
| 25-Hydroxyvitamin D3 (nmol/L) | −0.020 | 0.761 |
| Sex (female/male) | 0.077 | 0.242 |
| Age (years) | 0.176 | 0.007 |
| Body mass index (kg/m2) | −0.038 | 0.557 |
| Total body fat (%) | −0.138 | 0.037 |
| Energy intake (kcal/day) | 0.317 | <0.0001 |
| Fat intake (g/day) | 0.350 | <0.0001 |
| Frequency of fish intakeb | 0.184 | 0.006 |
| Frequency of egg intakeb | 0.091 | 0.168 |
| Frequency of milk intakeb | 0.056 | 0.418 |
| Alcohol intake (g/day) | −0.132 | 0.043 |
| Physical activity level | −0.046 | 0.504 |
| Use of vitamin D supplements (no/yes) | −0.120 | 0.066 |
| Smoking (no/yes) | −0.035 | 0.599 |
| Household income ≥1,500 €/month (no/yes) | −0.195 | 0.007 |
r S=Spearman correlation coefficient.
a
Missing data were present on total body fat (n=5); consumption frequencies of fish (n=9), eggs (n=6), and milk (n=23); physical activity level (n=26); smoking behaviour (n=2); and monthly household net income (n=41).
b
Frequencies were dichotomised in never to several times per month (coded as 0) versus several times per week to daily (coded as 1).