Use of decision aids (DAs) v usual practice (control) or v another DA in patients with cancer or at risk of cancer*
| Setting | Comparison group | Outcomes | Number of comparisons | Weighted standardised mean effect size (95% CI)† |
| Screening | Control | Knowledge | 18 | 0.67 (0.40 to 0.94) |
| Screening | Control | Anxiety | 3 | −0.30 (−0.53 to −0.08) |
| Screening | Control | Decisional conflict | 5 | −0.15 (−0.44 to 0.13) |
| Prevention or treatment | Control | Knowledge | 3 | 0.50 (0.31 to 0.70) |
| Prevention or treatment | Control | Anxiety | 4 | 0.04 (−0.15 to 0.24) |
| Prevention or treatment | Control | Decisional conflict | 4 | −0.15 (−0.30 to 0.01) |
| Screening | DA | Knowledge | 5 | 0.13 (−0.36 to 0.52) |
| Prevention or treatment | DA | Knowledge | 3 | 0.33 (0.10 to 0.56)‡ |
*Abbreviations defined in glossary. Weighted effect size reported in standard deviation units.
†Negative values indicate treatment benefit for all outcomes except knowledge.
‡Positive values indicate benefit for more v less intensive DA.