Sex differences in number of X chromosomes and X-chromosome inactivation in females promote greater variability in hearing among males

Table 2 Pearson’s R correlations plotted in Fig. 4 and probabilities female R values = male R values

Grant et al. data	500 Hz	1 kHz	2 kHz	3 kHz	4 kHz	6 kHz
Female across-ear Rs	0.504	0.396	0.386	0.386	0.428	0.418
Male across-ear Rs	0.544	0.511	0.505	0.479	0.422	0.351
prob (female R = male R)	0.151	0.003	0.002	0.015	0.450	0.067

NHANES data	500 Hz	1 kHz	2 kHz	3 kHz	4 kHz	6 kHz	8 kHz
Female across-ear Rs	0.491	0.405	0.463	0.473	0.465	0.388	0.448
Male across-ear Rs	0.516	0.461	0.494	0.465	0.451	0.350	0.422
prob (female R = male R)	0.084	0.002	0.051	0.342	0.228	0.034	0.092

Grant et al. data	500:1k	1k:2k	2k:3k	3k:4k	4k:6k
Female within-left ear Rs	0.305	0.276	0.270	0.388	0.203
Male within-left ear Rs	0.464	0.370	0.326	0.405	0.152
prob (female R = male R)	0.000	0.022	0.120	0.358	0.156
Female within-right ear Rs	0.334	0.224	0.196	0.422	0.181
Male within-right ear Rs	0.430	0.364	0.319	0.394	0.140
prob (female R = male R)	0.017	0.002	0.006	0.261	0.213

NHANES data	500:1k	1k:2k	2k:3k	3k:4k	4k:6k	6k:8k
Female within-left ear Rs	0.369	0.324	0.374	0.504	0.181	0.288
Male within-left ear Rs	0.423	0.359	0.379	0.475	0.235	0.284
prob (female R = male R)	0.004	0.050	0.409	0.054	0.009	0.420
Male within-right ear Rs	0.404	0.325	0.345	0.450	0.191	0.290
Female within-right ear Rs	0.367	0.329	0.329	0.456	0.172	0.320
prob (female R = male R)	0.036	0.412	0.230	0.370	0.201	0.087

ISSN: 2042-6410