Psychometric evaluation of the Danish and Swedish Satisfaction with Life Scale in first episode psychosis patients.

Purpose: To psychometrically evaluate the Satisfaction with Life Scale in two cohorts of first-episode psychosis patients in the Danish National Schizophrenia Project and in the Swedish Parachute Project.

Method: Four properties of the Satisfaction with Life Scale were examined in the Danish cohort (explorative investigation) and then confirmed in the Swedish cohort: (1) the factor structure; (2) correlations between subscales; (3) internal consistencies of subscales; and (4) main tendencies (arithmetic means) and variations (standard deviations) of subscales. The relations between the Satisfaction with Life Scale and various life conditions were investigated in the Swedish cohort.