Fig. 4.

Absolute test–retest difference in reactance, expressed as a proportion of mean reactance, as a function of frequency for three age groups. The solid line represents the mean value and the dashed line represents the 90th percentile value.

Absolute test–retest difference in reactance, expressed as a proportion of mean reactance, as a function of frequency for three age groups. The solid line represents the mean value and the dashed line represents the 90th percentile value.