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Deviet al (1997)
| 47 children in ED with severe status asthmaticus | RCT (level 1b) | Admission to hospital | ARR 0.34 (95% CI 0.07 to 0.61); NNT 3 (95% CI 2 to 14) | 0.2 cc/kg 50% MgSO4 given |
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Scarfone et al (2000)
| 54 children in ED with moderate status asthmaticus | RCT (level 1b) | Admission to hospital | ARR 0.07 (95% CI −0.2 to 0.34), NNT 14 (95% CI 3 to 8: NNH 8 to 5) | 75 mg/kg MgSO4 (max 2.5 g) |
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Ciarallo et al (1996)
| 31 children in ED with moderate to severe status asthmaticus | RCT (level 1b) | Admission to hospital | ARR 0.27 (95% CI 0.05 to 0.49), NNT 4 (95% CI 2 to 19) | 25 mg/kg MgSO4 (max 2 g) |
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Ciarallo et al (2000)
| 30 children in ED with moderate to severe status asthmaticus | RCT (level 1b) | Admission to hospital | ARR 0.5 (95% CI 0.24 to 0.76), NNT 2 (95% CI 1 to 4) | 40 mg/kg MgSO4 (max 2 g) |