Table 2.
Prevalence of vitamin D deficiency oinChinese children and adolescents in the Chinese nutrition and health survey 2010–2012 (%).
| Variables | Male | Female | Total | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sufficient | Deficient | P Value | Sufficient | Deficient | P Value | Sufficient | Deficient | P Value | ||||
| ≥50 | 25–50 | <25 | ≥50 | 25–50 | <25 | ≥50 | 25–50 | <25 | ||||
| Total | 50.0 | 43.2 | 6.8 | 43.5 | 48.9 | 7.6 | 46.8 | 46.00 | 7.2 | |||
| Age group | <0.0001 | <0.0001 | <0.0001 | |||||||||
| 6–11 | 55.7 | 39.4 | 4.9 | 50.9 | 42.9 | 6.2 | 53.3 | 41.1 | 5.6 | |||
| 12–14 | 46.1 | 44.9 | 9.0 | 37.0 | 54.3 | 8.7 | 41.6 | 49.6 | 8.8 | |||
| 15–17 | 42.7 | 48.9 | 8.4 | 36.2 | 54.8 | 9.0 | 39.5 | 51.8 | 8.7 | |||
| Region type | <0.0001 | <0.0001 | <0.0001 | |||||||||
| Large cities | 44.9 | 46.4 | 8.7 | 38.9 | 50.9 | 10.2 | 41.9 | 48.7 | 9.4 | |||
| Small and medium-sized cities | 52.1 | 43.5 | 4.4 | 46.2 | 48.8 | 5.0 | 49.2 | 46.1 | 4.7 | |||
| Ordinary rural area | 49.1 | 41.1 | 9.8 | 43.1 | 46.7 | 10.2 | 46.1 | 43.9 | 10.0 | |||
| Poor rural areas | 53.5 | 41.9 | 4.6 | 45.1 | 49.8 | 5.1 | 49.3 | 45.9 | 4.8 | |||
| Ethnic group | 0.0187 | 0.1022 | 0.0123 | |||||||||
| Han | 49.47 | 43.46 | 7.07 | 43.6 | 48.6 | 7.8 | 46.5 | 46.00 | 7.5 | |||
| Other | 54.01 | 40.89 | 5.10 | 43.2 | 50.9 | 5.9 | 48.5 | 46.0 | 5.5 | |||
| Latitude | <0.0001 | 0.0028 | <0.0001 | |||||||||
| North | 48.3 | 45.9 | 5.8 | 42.1 | 50.9 | 7.0 | 45.2 | 48.4 | 6.4 | |||
| South | 51.5 | 40.7 | 7.8 | 44.8 | 47.1 | 8.1 | 48.1 | 43.9 | 8.0 | |||
| Season | <0.0001 | <0.0001 | <0.0001 | |||||||||
| Spring | 45.6 | 49.3 | 5.1 | 35.0 | 59.1 | 5.9 | 40.4 | 54.1 | 5.5 | |||
| Summer | 65.4 | 31.1 | 3.5 | 59.7 | 36.5 | 3.8 | 62.6 | 33.8 | 3.6 | |||
| Autumn | 52.3 | 40.4 | 7.3 | 46.0 | 46.1 | 7.9 | 49.2 | 43.2 | 7.6 | |||
| Winter | 44.1 | 48.9 | 7.0 | 38.2 | 53.6 | 8.2 | 41.2 | 51.2 | 7.6 | |||
| Outdoor time | 0.0409 | 0.0398 | 0.0395 | |||||||||
| Low than 30 min | 49.0 | 43.8 | 7.2 | 42.9 | 49.5 | 7.6 | 45.9 | 46.7 | 7.4 | |||
| 30~60 min | 52.3 | 41.4 | 6.3 | 43.3 | 48.9 | 7.8 | 47.9 | 45.1 | 7.0 | |||
| More than 60 min | 51.7 | 42.4 | 5.9 | 47.5 | 45.1 | 7.4 | 49.6 | 43.8 | 6.6 | |||
| Ambient UVB level (J/m2) | <0.0001 | <0.0001 | <0.0001 | |||||||||
| Low | 47.6 | 46.3 | 6.1 | 41.7 | 50.4 | 7.9 | 44.7 | 48.3 | 7.0 | |||
| Medium | 47.8 | 44.9 | 7.3 | 40.6 | 52.2 | 7.2 | 44.2 | 48.6 | 7.2 | |||
| High | 54.6 | 38.1 | 7.3 | 48.4 | 44.0 | 7.6 | 51.5 | 41.0 | 7.5 | |||
| BMI | 0.0126 | 0.8588 | 0.0892 | |||||||||
| Normal | 50.0 | 43.0 | 7.0 | 43.5 | 48.8 | 7.7 | 46.7 | 45.9 | 7.4 | |||
| Overweight | 47.9 | 44.2 | 7.9 | 44.4 | 49.0 | 6.6 | 46.3 | 46.4 | 7.3 | |||
| Obesity | 52.3 | 44.0 | 3.7 | 42.8 | 49.7 | 7.5 | 48.9 | 46.0 | 5.1 | |||