Asthma is an important health problem for inner-city children, frequently resulting in hospital admissions if symptoms become exacerbated. A study is proposed in which children will be randomized to either an active intervention or control intervention. It is expected that 30% of the children in the active group versus 10% of the children in the control group will have an improvement in asthma symptoms.
Suppose that 50 households are randomized per group. In the active intervention group, 14 of the 50 children had an improvement in symptoms compared with 6 out of 50 control intervention children. Test the hypothesis that active intervention has a higher rate of improvement than control intervention group.
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