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Confounding variables (Enneking stages)
| Confounding variables | IA or IB cases, n (%) | IIA or IIB or III cases, n (%) | P-value |
|---|---|---|---|
| Age, mean ± SD (years) | 16.50±2.84 | 15.91±3.35 | 0.284 |
| Sex | |||
| Male | 21 (50) | 141 (60.26) | 0.214 |
| Female | 21 (50) | 93 (39.74) | |
Abbreviation: SD, standard deviation.
