To determine the effects of spousal involvement on continuous positive airway pressure (CPAP) adherence and response to CPAP problems in male patients with obstructive sleep apnea (OSA).

Wives’ involvement (pressure, support, and collaboration), CPAP adherence and CPAP problems (e.g., mask leaks) were assessed for 10 days in 31 male OSA patients. Disease severity and pre-treatment ratings of relationship quality were tested as moderators of daily associations in multilevel models. Effects of wives’ involvement were tested as predictors of day-to-day adherence and average nightly adherence at 3 months.

Perception of wives’ support predicted increased adherence only in patients with high disease severity. Collaboration increased following nights with lower adherence and greater CPAP problems. Patients with lower conflict in the relationship reported a greater increase in collaboration associated with CPAP problems. Patients with lower support in the relationship reported increased next-day support following nights with CPAP problems. Perceived pressure from the wife was not associated with increased adherence in day-to-day analyses and associated with poorer adherence at 3 months.

The relationship between wives’ involvement and adherence was bidirectional and influenced by disease and relationship context. The majority of findings demonstrated increased positive wife involvement as a reaction to adherence and problems with CPAP. Supportive and collaborative interventions have the potential to improve CPAP adherence and response to CPAP-related problems, particularly in patients with high disease severity. Pressure to use CPAP from the wife was not beneficial for adherence that day and predicted poorer adherence at 3 months. Further research is needed to test supportive spousal involvement as an adherence intervention.