Number of centers | Included patients (% of total patients) | Mean number included patients/center | |
---|---|---|---|
Academic center | 7 | 111 (24.9) | 15.9 (range 3–40) |
Non-academic center | 50 | 335 (75.1) | 6.7 (range 1–48) |
1 included patient/center | 13 | 13 (2.9) | 1 |
2–5 included patients/center | 22 | 68 (15.2) | 3 |
6–10 included patients/center | 7 | 52 (11.7) | 7 |
11–20 included patients/center | 10 | 131 (29.4) | 13.1 |
> 20 included patients/center | 5 | 182 (40.8) | 36.1 |
No. of centers of 15 best including centers in the main study region | 8 out of 15 |