Study Flow Diagram
EFCC indicates engagement-focused care coordination; PSE, problem-solving education.We estimated our sample size to provide power to test a clinically significant difference across intervention groups on rate of symptom elevations. We estimated that a sample size of 100 per group would be able to detect a clinically important 33% reduction in the rate of symptom elevations from 1.2 to 0.8 per 6 follow-up assessments in each group in a Poisson model. Our sample size of 230 assumed 80% power, a 2-sided α = .05 indicating statistical significance, and 15% loss to follow-up.