From: Comparison on the status of vitamin A in 6- to 13- year-old children between 2002 and 2012 in China
Age group (year) | 2002 | 2012 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Urban | Rural | Urban | Rural | |||||||||
Boys | Girls | Total | Boys | Girls | Total | Boys | Girls | Total | Boys | Girls | Total | |
6–9 | 0.11 ± 0.03 | 0.11 ± 0.03 | 0.11 ± 0.03 | 0.09 ± 0.02 | 0.09 ± 0.03 | 0.09 ± 0.02 | 0.14 ± 0.02 | 0.14 ± 0.03 | 0.14 ± 0.03 | 0.12 ± 0.02 | 0.13 ± 0.03 | 0.13 ± 0.03 |
10–13 | 0.13 ± 0.03 | 0.13 ± 0.04 | 0.13 ± 0.04a | 0.11 ± 0.03 | 0.11 ± 0.03 | 0.11 ± 0.03b | 0.15 ± 0.04 | 0.15 ± 0.03 | 0.15 ± 0.03c | 0.14 ± 0.03 | 0.14 ± 0.03 | 0.14 ± 0.04d |
Total | 0.12 ± 0.03 | 0.10 ± 0.03 | 0.14 ± 0.03e | 0.13 ± 0.03f | ||||||||
0.11 ± 0.03 | 0.14 ± 0.03g |