Identifying client outcomes related to nursing care is critical to establish empirical evidence that supports the effectiveness of psychiatric nursing. The purpose of this article is to conduct a methodological review of the literature that examines client outcomes after treatment in acute care inpatient psychiatric hospitals and psychiatric units of general hospitals. The databases Medline, CINAHL, HealthSTAR/Ovid HealthSTAR and psycINFO were searched for articles published between 1991and 2004. A review of literature was conducted of studies related to client outcomes after inpatient psychiatric treatment. Forty-seven studies were reviewed. There is a dearth of literature related to client outcomes after inpatient psychiatric treatment. The existing literature has conceptual and methodological limitations. The organization of psychiatric nursing care, in relation to outcomes is nonexistent in the literature. Outcomes that are sensitive to nursing care must be conceptualized theoretically and then examined empirically. The Quality Health Outcomes model is proposed to conceptualize outcomes of acute inpatient psychiatric treatment that are sensitive to nursing interventions and the organization of nursing care.