Table 1 Baseline data.
Age(year) | Gender | Side | |||
|---|---|---|---|---|---|
Male | Female | Left | Right | ||
A (age ≤ 5 years) | 3.98 ± 1.186 | 21 | 29 | 24 | 26 |
B (5 < age ≤ 10 years) | 8.02 ± 1.67 | 30 | 20 | 21 | 29 |
C (10 < age ≤ 15 years) | 12.38 ± 1.22 | 23 | 27 | 24 | 26 |
D (15 < age ≤ 18 years) | 16.30 ± 0.56 | 30 | 20 | 25 | 25 |
χ² | \ | 5.29 | 0.72 | ||
P | \ | 0.15 | 0.87 | ||