LAUSR

Background A care manager organization, based on a collaborative care model, was implemented in the primary health care service in Region Västra Götaland, Sweden, to improve the care of persons with common mental disorders (CMDs). We aimed to investigate the association between the care manager organization and number of health care contacts, and the extent of psychotherapy among female and male patients with CMD compared to primary health care centers (PHCCs) offering usual care, in the introductory year of implementation with one year follow-up. Methods This register-based study included all PHCCs in the region, which were analyzed in two groups depending on their care manager status. The study periods were 2015.09.01–2016.08.31 (first year) and 2016.09.01–2017.08.31 (second year). Data on health care contacts and psychotherapy per PHCC were obtained from a health care register. The mean number and proportion of visits to different health care professionals, and the proportion of patients with short-term versus long-term psychotherapy were measured. A linear mixed-effects model for cross-sectional and longitudinal analysis was implemented as well as a generalized linear regression model for possible interaction effects of PHCC characteristic on care manager status and outcomes. Results PHCCs with a care manager organization had more nurse contacts (p = 0.001 for both year 1 and year 2) compared to PHCCs with usual care. PHCCs with usual care had a significantly lower proportion of visits to psychotherapists and a higher proportion of both female and male patients receiving short-term psychotherapy (1–5 sessions vs ≥6) over time and compared to PHCCs with a care manager organization. Conclusion With a care manager organization, nurse contacts increased at the PHCCs. However, this did not negatively influence the visits to a general practitioner and to psychotherapists. This evaluation showed that the care manager organization at PHCC level implies higher accessibility and sustainability of care for up to two years after implementation.