The purpose of this study was to test a set of hypotheses suggesting sleep quality and spiritual beliefs differed according to degree of psychological distress and biological sex. The Pittsburgh Sleep Quality Index measured sleep quality, the Beliefs and Values Scale measured spiritual beliefs, and the Kessler-6 Psychological Distress Scale measured distress. A factorial MANOVA tested the model. Higher sleep quality and greater spiritual beliefs were associated with lower levels of distress. Women exhibited lower sleep quality than men, whereas spiritual beliefs were equivalent between sexes. To decrease psychological distress, interventions should improve sleep quality and increase spiritual engagement.

Collectively, healthy proteins, healthy dairy, unhealthy empty calories, and moderate psychological distress were moderately predictive of sleep quality in the sample (Nagelkerke R2=23.8%). Results of the study suggested higher frequency of consumption of healthy protein and healthy dairy food choices reduced the odds of poor sleep quality, while higher consumption of empty calories and moderate psychological distress increased the odds of poor sleep quality.

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