Longitudinal linear regression analyses with follow-up perfectionism as the dependent variables, and age, sex, baseline and follow-up insomnia severity, baseline anxiety and baseline depression as predictors.

<p>Notes</p><p>ISI, Insomnia Severity Index</p><p>*Significant for p-level < .05.</p><p>** Significant for p-level < .01.</p><p>Longitudinal linear regression analyses with follow-up perfectionism as the dependent variables, and age, sex, baseline and follow-up insomnia severity, baseline anxiety and baseline depression as predictors.