OBJECTIVE: In many European countries, flexible assertive community treatment (FACT) has replaced assertive community treatment (ACT) despite limited evidence for FACT's effectiveness in improving functional and patient-reported outcomes. This study evaluated the effectiveness of FACT relative to ACT in improving functioning, client satisfaction, and the working alliance.

METHODS: The authors used a nonblinded, quasi-experimental controlled study design to compare outcomes of patients treated by ACT teams that were reconfigured to FACT teams with those of patients treated by a remaining ACT team. Patients from nine ACT teams in the Capital Region of Denmark were included. Six of the nine ACT teams were reconfigured to FACT in 2018 and 2019 by integrating them with community mental health teams. The remaining three ACT teams were used as control groups. Assignment to treatment was based solely on administrative considerations.

RESULTS: The study included 131 patients (FACT, N=74; ACT, N=57). Patients treated by FACT teams had poorer personal and social functioning than patients assigned to ACT teams (adjusted difference in means=-2.9, 95% CI=-5.8 to -0.1). No between-group differences were found in client satisfaction or working alliance.

CONCLUSIONS: Patients treated by FACT teams had significantly lower functioning than patients treated by ACT teams, but the clinical relevance or causality of this finding remains unclear. Given the reconfiguration of the FACT teams during follow-up, along with substantial drop-out rates and baseline differences between the two groups, these results must be interpreted with caution. The findings require further examination in a randomized controlled trial that includes fidelity measures of the treatment models.