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Table 2 Power to compare ALRI incidence before and after alternative biomass cookstove installed for varying relative odds and degrees of trend in ALRI rates over time

From: Designs of two randomized, community-based trials to assess the impact of alternative cookstove installation on respiratory illness among young children and reproductive outcomes in rural Nepal

 

True cook-stove effect (θ)

(Relative odds)

Degree of trend in ALRI incidence

−0.1

−0.2

−0.3

ν

0

2

8

0

2

8

0

2

8

No trend

88

26

34

100

81

89

100

99

99

Large trend

100

19

37

100

80

87

100

99

99