Bias risk results
| Low | Unclear | High | |
|---|---|---|---|
| All studies | |||
| Question 1.1 | 97 (95%) | 2 (2%) | 3 (3%) |
| Question 1.2 | 23 (23%) | 79 (77%) | 0 (0%) |
| Question 4.1 | 9 (9%) | 10 (10%) | 83 (81%) |
| Question 4.8 | 9 (9%) | 0 (0%) | 93 (91%) |
| Overall bias | 4 (4%) | 4 (4%) | 94 (92%) |
| Medically-focused adherence | |||
| Question 1.1 | 64 (100%) | 0 (0%) | 0 (0%) |
| Question 1.2 | 18 (28%) | 46 (72%) | 0 (0%) |
| Question 4.1 | 7 (11%) | 3 (5%) | 54 (84%) |
| Question 4.8 | 8 (13%) | 0 (0%) | 56 (88%) |
| Overall bias | 3 (5%) | 4 (6%) | 55 (86%) |
| Engineering-focused adherence | |||
| Question 1.1 | 33 (87%) | 2 (5%) | 3 (8%) |
| Question 1.2 | 5 (13%) | 33 (87%) | 0 (0%) |
| Question 4.1 | 2 (5%) | 7 (18%) | 29 (77%) |
| Question 4.8 | 1 (3%) | 0 (0%) | 37 (97%) |
| Overall bias | 1 (3%) | 0 (0%) | 37 (97%) |