Table 6.
25(OH)D concentrations in relation to quarter of the year.
| Quarter of year | n | mean age (months) | 25(OH)D (SD); ng/ml |
|---|---|---|---|
| I | 820 | 7 | 38.9 (28.5) |
| II | 778 | 7 | 37.9 (24.6) |
| III | 747 | 9 | 37.5 (24.6) |
| IV | 818 | 12 | 35.5 (21.5) |
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