Table 1. Adherence to PRISMA checklist of 154 systematic reviews and/or meta-analysis in two groups: With flow diagram and without flow diagram.
| Group without flow diagram (N = 76) |
Group with flow diagram (N = 78) |
|
|---|---|---|
| Description of PRISMA item | ||
| TITLE | ||
| Title | 50 (65.8%) | 64 (82.1%) |
| ABSTRACT | ||
| Structured summary | 63 (82.9%) | 68 (87.2%) |
| INTRODUCTION | ||
| Rationale | 75 (98.7%) | 78 (100.0%) |
| Objectives | 74 (97.4%) | 73 (93.6%) |
| METHODS | ||
| Protocol and registration | 5 (6.6%) | 6 (7.7%) |
| Eligibility criteria | 70 (92.1%) | 77 (98.7%) |
| Information sources | 71 (93.4%) | 77 (98.7%) |
| Search | 58 (76.3%) | 68 (87.2%) |
| Study selection | 63 (82.9%) | 75 (96.2%) |
| Data collection process | 27 (35.5%) | 37 (47.4%) |
| Data items | 33 (43.4%) | 38 (48.7%) |
| Risk of bias in individual studies | 23 (30.3%) | 37 (47.4%) |
| Summary measures | 38 (50.0%) | 46 (59.0%) |
| Synthesis of results | 31 (40.8%) | 40 (51.3%) |
| Risk of bias across studies | 19 (25.0%) | 24 (30.8%) |
| Additional analyses | 23 (30.3%) | 23 (29.5%) |
| RESULTS | ||
| Study selection | 30 (39.5%) | 75 (96.2%) |
| Study characteristics | 50 (65.8%) | 72 (92.3%) |
| Risk of bias within studies | 15 (19.7%) | 37 (47.4%) |
| Results of individual studies | 39 (51.3%) | 61 (78.2%) |
| Synthesis of results | 34 (44.7%) | 43 (55.1%) |
| Risk of bias across studies | 20 (26.3%) | 25 (32.1%) |
| Additional analysis | 24 (31.6%) | 27 (34.6%) |
| DISCUSSION | ||
| Summary of evidence | 54 (71.1%) | 66 (84.6%) |
| Limitations | 30 (39.5%) | 45 (57.7%) |
| Conclusions | 64 (84.2%) | 71 (91.0%) |
| FUNDING | ||
| Funding | 42 (55.3%) | 42 (53.8%) |
| PrismaTotal | 54.8 (19.7) | 66.2 (17.6) |