Table 1 Child health and demographic characteristics by serum vitamin D status
Total participants (n = 101) | Child hydroxyvitamin D (25(OH)D) | ||
|---|---|---|---|
Insufficient < 50 nmol/l (n = 27) | Sufficient ≥50 nmol/l (n = 74) | ||
Child characteristics | |||
Age at oral exam, mean (SD) | 8.1 (0.4) | 8.1 (0.4) | 8.1 (0.4) |
Sex, n (%) | |||
Boys | 48 (47.5) | 11 (40.7) | 37 (50.0) |
Girls | 53 (52.5) | 16 (59.3) | 37 (50.0) |
BMI, mean (SD) | 16.5 (1.7) | 16.3 (1.3) | 16.6 (1.8) |
iso-BMI, n (%) | |||
Thinness | 3 (3.0) | 1 (3.7) | 2 (2.7) |
Normal weight | 86 (85.1) | 24 (88.9) | 62 (83.8) |
Overweight | 12 (11.9) | 2 (7.4) | 10 (13.5) |
Season of blood draw, n (%) | |||
Winter or spring (Dec - May) | 66 (65.4) | 23 (85.2) | 43 (58.1) |
Summer or autumn (June - Nov) | 35 (34.6) | 4 (14.8) | 31 (41.9) |
25OHD nmol/l, mean (SD) | 59.2 (15.7) | 40.6 (8.4) | 66.0 (11.7) |
PTH pmol/la, mean (SD) | 2.42 (1.1) | 2.56 (1.1) | 2.37 (1.1) |
Mother’s educational level, n (%) | |||
High school or university ≤4 years | 41 (40.6) | 14 (51.9) | 27 (36.5) |
University > 4 years | 60 (59.4) | 13 (48.1) | 47 (63.5) |