Measurement of mental health in substance use disorder outpatients.

Few studies have examined mental health (MH) attributes of patients with substance use disorder (SUD). This study examines the internal consistency, concurrent validity, and comparative level of MH attributes (i.e., optimism, life attitudes, spirituality/religiousness, social support, positive mood, hope, and vitality) in patients with SUD compared with the instrument development group. The internal consistency of optimism, spirituality/religiousness, positive mood, hope, and vitality were similar in both groups. Some subscales of the social support and life attitude measures had lower internal consistency than was found for the original samples, although internal consistency of more global constructs were comparable. Patients with SUD had higher positive mood, spirituality/religiousness, and hope scores, whereas social support, life attitudes, and optimism scores were lower than in the original sample. Correlations between MH attributes and recent life problems of patients with SUD generally supported the concurrent validity of the MH measures.