Table 7.

Association of rs681524 with hearing PC2 stratified by age groups

Population	<40 years			40–60 years			>60 years
	n	Beta	SE	n	Beta	SE	n	Beta	SE
Carlantino	88	−0.448	0.613	87	0.468	0.599	105	−0.412	0.403
Cilento	82	−0.956	0.385	150	−0.675	0.282	188	0.105	0.274
Friuli Venezia Giulia	295	0.124	0.116	424	−0.518	0.170	378	−0.258	0.210
Korcula	103	0.089	0.306	399	0.304	0.183	292	0.349	0.243
Split	138	−0.307	0.257	232	−0.595	0.218	127	−0.263	0.272
Silk Road	115	−0.210	0.424	104	0.253	0.428	36	−0.027	0.691
Talana	NA	NA	NA	NA	NA	NA	NA	NA	NA
TwinsUK	19	−0.993	0.671	372	−0.356	0.162	589	−0.314	0.113
Mean effect	120	−0.386	0.396	253	−0.160	0.292	245	−0.117	0.315

The effect of the C allele at rs681524 on hearing PC2 was analysed in three age groups (>40, 40–60 and >60 years) in all samples separately. For each association, the sample size (n), effect size (beta) and standard error of the effect size (SE) are given. A mean effect was calculated for all samples per age group (beta, SE).