| Variable | Frequency (f) | Percentage (%) | Mean (±SD) |
| Age at menarche |
|
| 13.07 (1.38) |
| 8 - 9 years | 8 | 0.94 |
|
| 10 - 11 years | 83 | 9.8 |
|
| 12 - 13 years | 432 | 50.9 |
|
| 14 - 15 years | 293 | 34.6 |
|
| 16 - 17 years | 32 | 3.8 |
|
| Duration of menstrual cycle |
|
| 28.11 (2.89) |
| 21 - 25 days | 81 | 13.6 |
|
| 26 - 30 days | 450 | 75.4 |
|
| 31 - 35 days | 58 | 9.7 |
|
| 36 - 40 days | 3 | 0.5 |
|
| 41 - 45 days | 5 | 0.8 |
|
| Duration of menstrual period |
|
| 4.49 (0.99) |
| 2 days | 6 | 0.7 |
|
| 3 days | 121 | 13.7 |
|
| 4 days | 340 | 38.4 |
|
| 5 days | 313 | 35.4 |
|
| 6 days | 62 | 7.0 |
|
| 7 days | 43 | 4.9 |
|
| Have a regular cycle |
|
| N/A |
| Yes | 506 | 56.3 |
|
| No | 392 | 43.7 |