Table 1 Number and percentage of papers which fulfil the quality criteria
|  | Representativeness | Participation rate > 90% | Generalizability | Lost to follow-up < 10% | Readmission to all hospitals | Adjustment for confounding factors |
|---|---|---|---|---|---|---|
Yes | 26 (32.5%) | 25 (31.2%) | 66 (82.5%) | 40 (50.0%) | 40 (50.0%) | 32 (40.0%) |
No | 51 (63.7%) | 37 (46.2%) | 12 (15.0%) | 15 (18.7%) | 35 (43.7%) | 44 (55.0%) |
Unclear | 3 (3.7%) | 18 (22.5%) | 2 (2.5%) | 25 (31.2%) | 5 (6.2%) | 4 (5.0%) |