A randomised crossover trial of facemask efficacy.

Hayden, J T; Smith, N; Woolf, D A; Barry, P W; O'Callaghan, C · Arch Dis Child · 2004

rct · Level II

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Abstract

The efficacy of different facemasks that can be used in the delivery of aerosol medication to children with recurrent wheeze or asthma was investigated. The results showed a statistically significant difference between some of the masks used, which has important implications for current clinical practice

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