A discrepancy of self-reported vs objective sleep measures is common among sleep laboratory patients and represents a relevant concern for the treating physician, with resulting difficulties for both diagnosis and treatment of sleep disorders. Using multiple regression analyses, we could show that the type of sleep disorder is the main predictor of a discrepancy between self-reported and objective TST and SE, with patients with insomnia showing the most pronounced discrepancy between self-reported and objective TST and SE compared to all other sleep disorders. This effect was independent of the patients’ age, sex, or whether PSG was performed in an ambulatory or a laboratory setting.Apart from the type of sleep disorder, contributory effects for higher discrepancy of self-reported vs objective sleep discrepancy were found for lower arousal indices.
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