Table 4.
Select review characteristics, stratified by Abstrackr’s relevance predictions
| Review characteristic | n studies | Correctly predicted as relevant, n (%) | Incorrectly predicted as irrelevant, n (%) | P valuea |
|---|---|---|---|---|
| Review type | ||||
| Systematic | 689 | 601 (87) | 88 (13) | 0.37 |
| Rapid | 113 | 95 (84) | 18 (16) | |
| Research question | ||||
| Single | 297 | 246 (83) | 51 (17) | 0.01 |
| Multiple | 505 | 450 (89) | 55 (11) | |
| Intervention/exposure | ||||
| Simple | 403 | 346 (86) | 57 (14) | 0.47 |
| Complex | 399 | 350 (88) | 49 (12) | |
| Included study designs | ||||
| Single—only randomized trials | 129 | 122 (95) | 7 (5) | 0.003 |
| Single—only systematic reviews | 72 | 57 (79) | 15 (21) | |
| Multiple | 601 | 517 (86) | 84 (14) | |
aFisher’s exact test