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Required number and sampling criteria of patients in each sampled hospital
| Type of patients | Departments of internal medicine | Departments of surgery | ||
|---|---|---|---|---|
| Urban residents | Rural residents | Urban residents | Rural residents | |
| Outpatients | 2 | 1 | 2 | 1 |
| Inpatients | 1 | 2 | 1 | 2 |
| Total | 3 | 3 | 3 | 3 |
