| Methods | n = 45, 4 centres Allocation concealment: not described Baseline similarity: age, SAPS II, sepsis Blinding: caregivers Cointerventions: not described Withdrawals: treatment (1/23), control (2/22) Losses to follow‐up: none |
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| Participants | Inclusions: AECC definition for ARDS Exclusion: Immunocompromised |
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| Interventions | Continuous IV NAC, 190 mg/kg/day for 3 days (total dose 570 mg/kg), or placebo | |
| Outcomes | ICU mortality: RR 1.27 (95% CI 0.48 to 3.37), based on data from 42 patients Duration of ventilation: MD ‐1.2 days (95% CI ‐5.2 to 2.8), based on data from 42 patients Adverse events attributed to study medication: none |
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| Notes | ||
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Unclear risk | B ‐ Unclear |