Results of univariate variance modelling for age-adjusted pure-tone audiogram phenotypes.

Three nested models were compared to the saturated ACE model, taking into account different causal factors: AE (additive genetics and unshared environmental factors), CE (shared and unshared environmental factors) and E (unshared environmental factors). For each phenotype the saturated model and nested models with a better model fit (minus 2 log likelihood(−2 logL), degrees of freedom (df)) are shown. Model comparison is only given for nested models as they are compared to the full (ACE) model. Estimated variances explained by the specific causal factors (A =  additive genetics, C =  shared environment and E =  unshared environment) are given with 95% confidence intervals for each model.