Table 1.
Clinical characteristics and risk factors.
| Characteristics | Total (N = 161) | ||
|---|---|---|---|
| PP (N = 84) | Control(N = 77) | p-value | |
| Age (years) | 7.9 ± 1.8 | 10.0 ± 2.1 | <0.001 |
| BMI-SDS | 1 ± 1.4 | 0.5 ± 1.2 | <0.05 |
| Thelarche (years) | 7.2 ± 1.8 | 9.4 ± 2.2 | <0.001 |
| Pubarche (years) | 7.3 ± 1.7 | 9.1 ± 2.7 | <0.001 |
| Menarche (years) | 12.8 ± 1.3 | 10.8 ± 0.7 | <0.005 |
| Mother’s menarche (years) | 12.2 ± 1.6 | 11.7 ± 1.1 | NS (0.128) |
| EBF duration (years) | 0.3 ± 0.2 | 0.4 ± 0.3 | <0.05 |
| EBF >6 months (yes, %) | 28 (33%) | 38 (49%) | 0.05 (OR: 0.5; IC 95%:0.3–0.9) |
| Use of soy-based formulas (yes, %) | 23 (28%) | 7 (9%) | <0.05 (OR: 3.8; IC 95%: 1.5–9) |
PP, precocious puberty; BMI-SDS, body mass index standard deviation score; EBF, exclusive breastfeeding; NS, not significant.