Table 2.
Distribution of physician-assessed secondary sex characteristics a.
| Measure | Stage | N (%) |
|---|---|---|
| Boys | ||
| Pubic hair | 1 | 47 (19.2) |
| 2 | 31 (12.7) | |
| 3 | 63 (25.7) | |
| 4 | 54 (22.0) | |
| 5 | 50 (20.4) | |
| Genitalia | 1 | 13 (5.3) |
| 2 | 33 (13.5) | |
| 3 | 43 (17.6) | |
| 4 | 103 (42.0) | |
| 5 | 53 (21.6) | |
| Testicular volume | Yes (≥20 mL) | 171 (69.8) |
| No | 74 (30.2) | |
| Girls | ||
| Pubic hair | 1 | 18 (6.8) |
| 2 | 65 (24.4) | |
| 3 | 63 (23.7) | |
| 4 | 68 (25.6) | |
| 5 | 52 (19.6) | |
| Breast | 1 | 11 (4.1) |
| 2 | 26 (9.8) | |
| 3 | 69 (25.9) | |
| 4 | 98 (36.8) | |
| 5 | 62 (23.3) | |
| Menarche | Yes | 230 (84.9) |
| No | 41 (15.1) |
a The sample size is 245 for each indicator of puberty in boys. For girls, 266 girls had available data on pubic hair and breast development, and 271 girls had data on menarche.