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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Breathlessness | 2 | Mean Difference (IV, Fixed, 95% CI) | Subtotals only | |
| 1.1 Fentanyl: change from baseline | 1 | 20 | Mean Difference (IV, Fixed, 95% CI) | 0.20 [‐2.50, 2.90] |
| 1.2 Fentanyl: post‐treatment score | 1 | 24 | Mean Difference (IV, Fixed, 95% CI) | ‐0.40 [‐2.76, 1.96] |
