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Table 1 Sample size with binary DC

From: Village doctor-assisted case management of rural patients with schizophrenia: protocol for a cluster randomized control trial

Proportion of patients achieving DC in the control group** Proportion of patients achieving DC in the treatment group ICC Number of clusters needed*
0.5 0.6 0.01 86
0.05 114
0.1 148
0.5 0.7 0.01 22
0.05 28
0.1 36
0.5 0.8 0.01 10
0.05 12
0.1 16
  1. *The exercise uses a 5% significance level at a power of 80%, with 10 patients per cluster as suggested by Project 686 registries.
  2. **The control group proportion of patient achieving DC is based on our current research in Liuyang.