At baseline, patients from ethnic minority groups were younger than Dutch native patients (Antillean-Surinamese, 31.2±9.9 years; Turkish-Moroccan, 27.0±7.1; and Dutch native, 42.9±15.8 years; F=20.25, df=2 and 138, p<.001). Larger proportions of the ethnic minority groups had a psychotic disorder (Antillean-Surinamese, 92%, N=33; Turkish-Moroccan, 90%, N=28; and Dutch native, 66%, N=49; χ2=12.66, df=2, p=.002). No significant between-group differences were found in service engagement, illness insight, perceived coercion, and symptom severity. Mixed-model regression analyses showed a significant increase in engagement during follow-up (time β =−1.34, SE=.28, p<.05; time2 β=–.05, SE=.02, p<.05). Better illness insight was correlated with greater engagement (β=–.91, SE=.17, p<.05). Over the follow-up period, engagement deteriorated among patients with more severe symptoms (β=–.05, SE=.06; by time β=.02, SE=.01, p<.05) and among patients with high levels of perceived coercion, although this effect became weaker over time (perceived coercion β=.10, SE=.06; by time β=.05, SE=.02, p<.05; by time2 β=–.004, SE=.002, p<.05). No significant relationship was found between ethnicity and the course of engagement during follow-up.