Proposition of a Shortened Version of the Self-efficacy Measure for Sleep Apnea (SEMSA-15): Psychometric Validation and Cut-Off Score for CPAP Adherence

The Self-Efficacy Measure for Sleep Apnea (SEMSA) is a 26-item questionnaire that investigates perceived risks, outcome expectancies and self-efficacy, i.e., the confidence to undertake treatment, in the context of continuous positive airway pressure (CPAP) interventions for sleep apnea syndrome. This questionnaire can be considered too lengthy for clinical practice; therefore, a shortened version is needed. 290 adults undergoing CPAP treatment...