Table 1. Patient characteristics in the asymmetric and symmetric groups.

	Asymmetric group	Myopic subgroup	Nonmyopic subgroup	Symmetric group	P*	P†
Number of patients, n	110	66	44	45
Age at diagnosis (years)	53.9 ± 12.0 (30–80)	48.7 ± 10.1 (30–76)	61.6 ± 10.4 (30–80)	59.3 ± 13.5 (35–88)	0.016	<0.001
Sex, male/female	70/40	45/21	25/19	26/19	0.585	0.234
Hypertension, yes/no	20/90	6/60	14/30	12/33	0.276	0.005
Diabetes, yes/no	12/98	7/59	5/39	5/40	1	1
Worse eye laterality, right/left	56/54	29/37	25/19	25/20	0.723	0.243
Follow-up period (months)	59.05 ± 48.53	54.89 ± 49.26	65.20 ± 46.71	64.71 ± 49.45	0.517	0.286

dB, decibel; D, diopters; IOP, intraocular pressure; PPA, peripapillary atrophy;

Unless otherwise indicated, data are given as the mean ± SD (range).

* P value was calculated between total asymmetric group and symmetric group, by independent t-test for continuous variables, and χ² test for categorical variables.

^† P value was calculated between myopic and nonmyopic asymmetric group, by independent t-test for continuous variables, and χ² test for categorical variables.