title: Relationship between physical, psychological, social, and environmental variables and subjective sleep quality.
abstract: In a survey study of patients of a general practitioner the relationship between sleep quality and a heterogeneous set of other variables was examined. The data file was divided randomly, and a two-staged multiple regression analysis was performed on each half. The two resulting regression equations were cross-validated on the data of the other data file. The variables mood, age, and use of medicine proved to have the most significant relationship to sleep quality.
mesh_terms: D000328:Adult; D000339:Affect; D000367:Age Factors; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D012044:Regression Analysis; D012306:Risk; D012893:Sleep Wake Disorders / Q000453:epidemiology*; D011795:Surveys and Questionnaires