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RESEARCH PRODUCT

Development and Validation of the OSA-CPAP Perceived Competence Evaluation Interview

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description

Continuous positive airway pressure (CPAP) is one of the most common therapies for Obstructive Sleep Apnea (OSA). We present a brief, patient-reported outcome measure used to assess patients' levels of adherence with CPAP treatment.A questionnaire was developed based on academic literature. We qualitatively tested a pool of 18 items. It was tested in a sample of 174 patients from the Hospital La Princesa. Next, 1021 patients from Catalonia were evaluated.5 items were removed. Nominal groups referred to three areas: general knowledge about OSA and its risks; CPAP treatment information and expectations; CPAP use, monitoring, and confidence with its use. The 13 retained items maintained the same meaning as the original questionnaire (r=.986; p.001) and the three proposed dimensions detected a significant increase in general knowledge of OSA (t[173]=8.097, p.001); CPAP treatment information (t[173]=15.170, p.001); and CPAP use (t[173]=14.642, p.001). The final 12-item version was reliable (CRI=.793) and its internal structure was adequate (χThe interview could help clinicians prevent some dropouts by targeting patients with lower adherence. It's a tool for assessing patient adherence to CPAP and to promote strategies through education and external motivational stimuli.