Crude geometric mean (95% CI) vitamin D (25(OH)D in nmol/L) levels according to gender, age, duration of residence in Norway, residence status and season for 591 participants with valid vitamin D
| Total | Female | Male | ||||
|---|---|---|---|---|---|---|
| n=591 | n=318 | n=273 | ||||
| n | Geometric mean (95% CI) | n | Geometric mean (95% CI) | n | Geometric mean (95% CI) | |
| Overall | 35 (33 to 36) | 32 (30 to 35) | 38 (36 to 40)*** | |||
| Age (years) | ||||||
| <10 | 116 | 43 (40 to 47) | 66 | 40 (35 to 45) | 50 | 48 (43 to 54)* |
| 10–17 | 141 | 30 (28 to 33)††† | 52 | 24 (21 to 29)††† | 89 | 34 (31 to 38)***†† |
| 18–29 | 169 | 31 (29 to 34)††† | 106 | 30 (27 to 34)†† | 63 | 34 (30 to 39)†† |
| 30–40 | 107 | 36 (32 to 39)† | 63 | 33 (29 to 38) | 44 | 39 (33 to 46) |
| >40 | 58 | 40 (36 to 47) | 31 | 42 (34 to 52) | 27 | 39 (31 to 49) |
| Duration of residence in Norway (months) | ||||||
| ≤2 months | 177 | 38 (35 to 41) | 98 | 35 (31 to 40) | 79 | 42 (37 to 48) |
| >2–6 months | 230 | 33 (31 to 36)† | 143 | 30 (28 to 33) | 87 | 38 (34 to 43) |
| >6 months | 184 | 34 (31 to 36) | 77 | 33 (29 to 37) | 107 | 34 (32 to 38)† |
| Residence status | ||||||
| Family immigrants | 377 | 36 (34 to 38) | 225 | 32 (30 to 35) | 152 | 41 (38 to 45)†† |
| Asylum status | 187 | 32 (30 to 35) | 76 | 30 (27 to 35) | 111 | 33 (30 to 37) |
| Other | 27 | 41 (34 to 49) | 17 | 41 (32 to 53) | 10 | 40 (29 to 56) |
| Season | ||||||
| Winter (December–May) | 331 | 33 (31 to 35) | 183 | 31 (28 to 34) | 148 | 36 (33 to 39) |
| Summer (June–November) | 260 | 37 (35 to 39)† | 135 | 34 (31 to 38) | 125 | 40 (37 to 44) |
*p Values from t tests of equality of means of log-transformed data between genders.
†p Values from Wald tests of equality of means of log-transformed data when compared to reference category (first reported category) within genders and for the total sample, with Sidak adjustment of p values.
*p<0.05, **p<0.01, ***p<0.001.
†p<0.05, ††p<0.01, †††p<0.001.