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Demographic and auditory function of the presbycusis and control groups
Demographics Presbycusis Control P Value
No. of patients 15 14 
Age (yr)^{^a} 63.2 ± 2.6 62.4 ± 2.0 .38^{^b}
Female, no. (%) 10 (66.7) 8 (57.1) .60^{^c}
Education levels (yr)^{^a} 10.7 ± 3.5 10.1 ± 2.6 .61^{^b}
PTA (dB HL)^{^a,^d} 30.7 ± 4.7 15.9 ± 1.4 <.001^{^b}
↵a Data are given as mean ± standard deviation.
↵b The between-group differences were assessed with the 2-tailed Student t test.
↵c The between-group differences were assessed with the 2-tailed Pearson χ² test.
↵d The PTAs from both ears were averaged.

Demographics	Presbycusis	Control	P Value
No. of patients	15	14
Age (yr)^{^a}	63.2 ± 2.6	62.4 ± 2.0	.38^{^b}
Female, no. (%)	10 (66.7)	8 (57.1)	.60^{^c}
Education levels (yr)^{^a}	10.7 ± 3.5	10.1 ± 2.6	.61^{^b}
PTA (dB HL)^{^a,^d}	30.7 ± 4.7	15.9 ± 1.4	<.001^{^b}