Table 1. Comparison of the axial length between girls and boys by adjusting age and laterality of the cataract.

	0–2 Y	2–6 Y	6–12 Y	12–18 Y	0–18 Y
Bilateral
Girls	19.94 ± 2.04	21.94 ± 1.69	23.04 ± 2.08	24.16 ± 1.84	22.06 ± 2.32
	(n = 98)	(n = 177)	(n = 101)	(n = 63)	(n = 439)
Boys	19.68 ± 1.85	22.48 ± 1.55	23.31 ± 1.96	23.70 ± 2.00	22.12 ± 2.31
	(n = 163)	(n = 262)	(n = 144)	(n = 84)	(n = 653)
t	1.06	−3.46	−1.04	1.43	−0.40
P	0.290	0.001	0.300	0.155	0.692
Unilateral
Girls	20.86 ± 1.95	22.35 ± 1.84	22.83 ± 1.92	24.91 ± 2.53	22.50 ± 2.26
	(n = 40)	(n = 101)	(n = 51)	(n = 27)	(n = 219)
Boys	21.34 ± 1.82	22.88 ± 1.73	23.53 ± 1.98	24.90 ± 2.03	23.06 ± 2.07
	(n = 40)	(n = 131)	(n = 71)	(n = 33)	(n = 275)
t	−1.14	−2.25	−1.94	0.22	−2.87
P	0.259	0.025	0.054	0.983	0.004

The data are presented as the means ± standard deviation (SD). Bold data are significant at P < 0.05 (independent sample T-test); Y: years.