| Ages at Menarche | Frequency (%) | Menarche Mean ± Std | Minimum | Maximum | f-value | p-value |
| 10-11 | 23 (7.39) | 10.65 ± 0.64 | 10.00 | 11.00 |
|
|
| 12-14 | 177 (56.91) | 12.90 ± 0.78 | 12.00 | 14.00 | 159.465 | 0.000 |
| 15-17 | 12 (3.85) | 15.33 ± 0.65 | 15.00 | 17.00 |
|
|
| Overall mean age at menarche | 212 (68.17) | 12.79 ± 1.20 | 9.00 | 17.00 |
|
|