From: Emotional and behavioral problems of 9–18-year-old girls and its relationship to menarche age
Age | Number | Mean ± SD | Min | Max |
---|---|---|---|---|
9–10 | 500 | 15.68 ± 5.7 | 2 | 32 |
11–12 | 73 | 13.82 ± 5.8 | 3 | 31 |
13–14 | 926 | 14.72 ± 6.29 | 0 | 33 |
15–16 | 211 | 16.37 ± 5.1 | 1 | 31 |
17–18 | 289 | 16.69 ± 5.4 | 1 | 28 |