GAD1 and anxiety disorder: Anxiety disorders associated with more fragmented rhythm (intradaily variability), independent of covariates (OR: 1.39 per 1 SD, 95% CI: [1.13; 1.70], p = 0.002). GAD (n = 39) associated with more fragmented rhythms (OR: 1.75 per 1 SD, 95% CI: [1.20; 2.55], p = 0.004), but also shorter TST (OR: 0.66 per 1 h, 95% CI: [0.45; 0.97], P = 0.033)