Table 1 Characteristics of study sample and distribution of serum 25 (OH) D
From: High prevalence of vitamin D deficiency among children aged 1 month to 16 years in Hangzhou, China
Mean+/- SD(nmol/L) | P value | < 25 nmol/L,% (95%CI) | < 50 nmol/L,% (95%CI) | < 75 nmol/L,% (95%CI) | |
|---|---|---|---|---|---|
0-1y stage (infancy) | |||||
Total (n = 2116) | 98.7 ± 47.1 | 0.4 (NC) | 5.4 (4.4-6.4) | 33.6 (31.6-35.6) | |
Gender | 0.763 | ||||
Male (n = 1221) | 98.5 ± 47.0 | 0.4 (NC) | 5.3 (4.0-6.6) | 34.3 (31.6-37.0) | |
Female (n = 895) | 99.1 ± 47.2 | 0.3 (NC) | 5.5 (4.0-7.0) | 32.7 (29.6-35.8) | |
2-5y stage (preschool) | |||||
Total (n = 2269) | 69.6 ± 30.4 | 1.1 (NC) | 21.9 (20.2-23.6) | 68.6 (66.7-70.5) | |
Gender | 0.108 | ||||
Male (n = 1454) | 70.4 ± 31.4 | 1.2 (NC) | 20.8 (18.7-22.9) | 67.7 (65.3-70.1) | |
Female (n = 815) | 68.2 ± 28.6 | 1.1 (NC) | 24.0 (21-27) | 70.1 (67.0-73.2) | |
6-11y stage (school age) | |||||
Total (n = 1440) | 56.1 ± 19.9 | 2.0 (NC) | 40.4 (37.9-42.9) | 88.3 (86.6-90.0) | |
Gender | 0.969 | ||||
Male (n = 1019) | 56.1 ± 18.7 | 1.6 (NC) | 39.1 (36.1-42.1) | 88.8 (86.9-90.7) | |
Female (n = 421) | 56.1 ± 22.6 | 3.1 (NC) | 43.7 (39.0-48.4) | 86.9 (83.7-90.1) | |
12-16y stage(adolescence) | |||||
Total (n = 183) | 52.1 ± 17.0 | 3.3 (NC) | 46.4 (39.2-53.6) | 89.6 (85.2-94.0) | |
Gender | 0.051 | ||||
Male (n = 135) | 53.5 ± 17.0 | 2.2 (NC) | 44.4 (36-52.8) | 88.1 (82.6-93.6) | |
Female (n = 48) | 48.0 ± 16.6 | 6.3 (NC) | 52.1 (38-66.2) | 93.8 (87.6-100) |