Table 2.
Serum levels of total 25(OH)D (nmol/l) in the entire cohort, males and females, according to age group, season and clothing style; Bahrain, October 2010–October 2011
| Entire cohort (n 500) | Males (n 250) | Female (n 250) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | sd | n | Mean | sd | n | Mean | sd | n | |||||||
| Age | |||||||||||||||
| <30 (15–29 years) | 26·1 | 18·1 | 262 | 33·9 | 23·7 | 133 | 18·3* | 12·5 | 129 | ||||||
| >30 (30–68 years) | 29·7 | 20·4 | 238 | 34·5 | 20·9 | 117 | 24·8* | 19·9 | 121 | ||||||
| P | 0·004 | 0·07 | 0·001 | ||||||||||||
| Season | |||||||||||||||
| Apr–Sep | 21·1 | 17·4 | 325 | 27·0 | 15·1 | 135 | 17·6* | 14·5 | 190 | ||||||
| Oct–Mar | 34·7 | 21·2 | 175 | 41·4 | 32·3 | 115 | 25·6* | 23·5 | 60 | ||||||
| P | <0·0001 | <0·0001 | <0·001 | ||||||||||||
| Clothing style | |||||||||||||||
| Conservative | – | – | – | – | – | – | 20·0 | 18·9 | 224 | ||||||
| Western style | – | – | – | – | – | – | 23·2 | 19·1 | 16 | ||||||
| P | – | – | 0·03 | ||||||||||||
25(OH)D, 25-hydroxyvitamin D.
All results are presented as geometric mean and standard deviation.
*Mean value was significantly lower than that of males (P ≤ 0·0001).