Figure 1. Latent profiles of symptoms.
BAS = Beliefs and Attitudes about Sleep Scale, ESS = Epworth Sleepiness Scale, FSS = Fatigue Severity Scale, GSES = Glasgow Sleep Effort Scale, HSW = “High Subjective Wakefulness” cluster profile, IRD = “Insomnia-Related Distress” cluster profile, ISI = Insomnia Severity Index, MI = “Mild Insomnia” cluster profile, PSGTST = total sleep time derived from polysomnography, PSAS = Pre-Sleep Arousal Scale, SE = sleep efficiency, SOL = sleep onset latency, WASO = wake after sleep onset.