A prospective questionnaire study in 100 healthy sleepers: non-bothersome forms of recognizable sleep disorders are still present.

Study Objectives: Despite several polysomnographic normative studies and multiple surveys of sleep disorders in the general population, few data have been collected on healthy sleepers. We aimed to survey the characteristics of healthy sleep.

Methods: We prospectively investigated the sleep history of 100 subjects of a representative population sample who reported undisturbed sleep and in whom relevant sleep disorders were ruled out by a two-step screening procedure.