From: Sample size calculation for multicentre efficacy trials of blood-stage malaria antigens
Scenarios | Sample size | E(n) | Alpha | zα/2 | θ | Ec | zβ | Power |
---|---|---|---|---|---|---|---|---|
Scenario 1 | 1,840 | 339 | 0.05 | 1.96 | 0.7 | 199.412 | 1.2892 | 0.90 |
 | 1,288 | 237 | 0.05 | 1.96 | 0.7 | 139.412 | 0.75677 | 0.78 |
Scenario 2 | 1,840 | 322 | 0.05 | 1.96 | 0.7 | 189.412 | 1.20669 | 0.89 |
 | 1,288 | 226 | 0.05 | 1.96 | 0.7 | 132.941 | 0.69297 | 0.76 |
Scenario 3 | 1,840 | 237 | 0.05 | 1.96 | 0.7 | 139.412 | 0.75677 | 0.78 |
 | 1,288 | 166 | 0.05 | 1.96 | 0.7 | 97.6471 | 0.3137 | 0.62 |
Scenario 4 | 1,840 | 168 | 0.05 | 1.96 | 0.7 | 98.8235 | 0.32736 | 0.63 |
 | 1,288 | 117 | 0.05 | 1.96 | 0.7 | 68.8235 | -0.05114 | 0.48 |
Scenario 5 | 1,380 | 237 | 0.05 | 1.96 | 0.7 | 139.412 | 0.75677 | 0.78 |
 | 966 | 166 | 0.05 | 1.96 | 0.7 | 97.6471 | 0.3137 | 0.62 |