Table 1 Risk of bias (RoB) judgment adequacy in Cochrane reviews using two separate blinding domains compared to the joint domain
Reassessment of judgments our studies | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Outcome category | Joint blinding domain | Blinding of participants and personnel | Blinding of outcome assessors | ||||||||||||
Judgment by Cochrane authors | High risk | Low risk | Unclear risk | Total N (%) | Adeq (%) | High risk | Low risk | Unclear risk | Total N (%) | Adeq (%) | High risk | Low risk | Unclear risk | Total N (%) | Adeq (%) |
All outcomes or not specified | 721 | 332 | 1581 | 2634 (83.1%) | 58.1% | 2642 | 1030 | 2909 | 6581 (95.1%) | 73.0% | 1355 | 1502 | 4253 | 7110 (82.1%) | 76.9% |
High risk | 592 | 11 | 147 | 750 | 78.9% | 2206 | 5 | 184 | 2395 | 92.1% | 1129 | 7 | 215 | 1351 | 83.6% |
Low risk | 39 | 273 | 769 | 1081 | 25.3% | 94 | 1000 | 1129 | 2223 | 45.0% | 43 | 1448 | 1149 | 2640 | 54.8% |
Unclear risk | 90 | 48 | 665 | 803 | 82.8% | 342 | 25 | 1596 | 1963 | 81.3% | 183 | 47 | 2889 | 3119 | 92.6% |
Objective outcomes | 0 | 84 | 0 | 97 (3.0%) | 81.4% | 53 | 69 | 6 | 128 (1.9%) | 85.9% | 0 | 408 | 0 | 408 (4.7%) | 71.6% |
High risk | 0 | 0 | 0 | 0 | N/A | 41 | 0 | 0 | 41 | 100% | 0 | 9 | 0 | 9 | 0% |
Low risk | 0 | 79 | 0 | 79 | 100% | 1 | 69 | 6 | 76 | 90.8% | 0 | 292 | 0 | 292 | 100% |
Unclear risk | 0 | 18 | 0 | 18 | 0% | 11 | 0 | 0 | 11 | 0% | 0 | 107 | 0 | 107 | 0% |
Subjective outcomes | 213 | 52 | 173 | 438 (13.8%) | 57.3% | 162 | 25 | 22 | 209 (3.0%) | 84.7% | 357 | 356 | 425 | 1138 (13.1%) | 86.9% |
High risk | 134 | 2 | 37 | 173 | 77.5% | 140 | 0 | 0 | 151 | 92.7% | 311 | 6 | 2 | 319 | 97.5% |
Low risk | 11 | 41 | 60 | 112 | 36.6% | 0 | 24 | 9 | 33 | 72.7% | 3 | 347 | 92 | 442 | 78.5% |
Unclear risk | 68 | 9 | 76 | 153 | 49.7% | 22 | 1 | 13 | 36 | 36.1% | 43 | 3 | 331 | 377 | 87.8% |
Overall (%) | 934 (28.9%) | 481 (14.9%) | 1754 (54.3%) | 3169 (100%) | 58.7% | 2857 (41.3%) | 1124 (16.2%) | 2937 (42.5%) | 6918 (100%) | 73.6% | 1712 (19.8%) | 2266 (26.2%) | 4678 (54.0%) | 8656 (100%) | 77.9% |
High risk | 726 | 13 | 184 | 923 | 78.7% | 2387 | 5 | 184 | 2575 | 92.7% | 1440 | 22 | 217 | 1679 | 85.8% |
Low risk | 50 | 393 | 829 | 1272 | 30.9% | 95 | 1093 | 1144 | 2325 | 47.0% | 46 | 2087 | 1241 | 3374 | 61.9% |
Unclear risk | 158 | 75 | 741 | 974 | 76.1% | 375 | 26 | 1609 | 2005 | 80.2% | 226 | 157 | 3220 | 3603 | 89.4% |