Table 2 Distribution of district and gender among a sample of 12–15 years old in Gansu province of China (n = 3848)
Characteristics | 12 years old | 13 years old | 14 years old | 15 years old |
|---|---|---|---|---|
Urban | ||||
Female | 236 | 244 | 257 | 240 |
Male | 231 | 232 | 256 | 243 |
Total | 467 | 476 | 513 | 483 |
Rural | ||||
Female | 229 | 248 | 238 | 241 |
Male | 234 | 242 | 239 | 238 |
Total | 463 | 490 | 477 | 479 |