Timing | RCTs (participants) | Anticipated absolute effects (95% CI) Length of stay, days | I2 | Certainty of evidence | Conclusion | |
---|---|---|---|---|---|---|
Control (range) | Intervention | |||||
Oxygen therapy vs. control | ||||||
August 2018 (baseline) | 3 (375) | Mean 2.0 to 6.2 days | 0.02 more (0.37 fewer to 0.41 more) | 0% | Lowa ⊕⊕⊝⊝ | May be little to no difference |
5 (467) | Mean 2.0 to 6.2 days | 0.28 fewer (0.92 fewer to 0.36 more) | 54% | Very lowb ⊕⊝⊝⊝ | Very uncertain | |
Hypertonic saline vs. control | ||||||
August 2018 (baseline) | 19 (2377) | Mean 1.8 to 7.4 days | 0.46 fewer (0.77 fewer to 0.15 fewer) | 78% | Moderatec ⊕⊕⊕⊝ | Probably reduces |
September 2018 (added Morikawa et al. [27]) | 20 (2505) | Mean 1.8 to 7.4 days | 0.43 fewer (0.73 fewer to 0.13 fewer) | 77% | Moderated ⊕⊕⊕⊝ | Probably reduces |