Original Research The Relation Between Perceived Need for Mental Health Treatment, DSM Diagnosis, and Quality of Life: A Canadian Population-Based Survey

Objectives: Prevalence estimates of mental disorders were designed to provide an indirect estimate of the need for mental health services in the community. However, recent studies have demonstrated that meeting criteria for a DSM-based disorder does not necessarily equate with need for treatment. The current investigation examined the relation between self-perceived need for mental health treatment and DSM diagnosis, with respect to quality of life (QoL) and suicidal ideation. Methods: Data came from an Ontario population-based sample of 8116 residents (aged 15 to 64 years). The University of Michigan Composite International Diagnostic Interview was used to diagnose mood, anxiety, substance use, and bulimia disorder according to DSM-III-R criteria. We categorized past-year help seeking for emotional symptoms and (or) perceiving a need for treatment without seeking care as self-perceived need for treatment. We used a range of variables to measure QoL: self-perception of mental health status, a validated instrument that measured well-being, and restriction of activities (current, past 30 days, and long-term). Results: Independent of subjects ’ meeting criteria for a DSM-III-R diagnosis, self-perceived need for treatment was significantly associated with poor QoL (on all measures) and past-year suicidal ideation. Conclusions: Self-perceived need for mental health treatment, in addition to DSM diagnosis, may provide valuable information for estimating the number of people in the population who need mental health services. The relation between self-perceived need for treatment and objective measures of treatment need requires future study. (Can J Psychiatry 2005;50:87–94) Information on funding and support and author affiliations appears at the end of the article