Table 1 Statistical power calculations
Relative risk (RR) for NH associated with binary risk factor | ||
|---|---|---|
RR = 1.5 | RR = 2.0 | |
Binary risk factor prevalence | Statistical power | |
10% | 71% | 99% |
20% | 86% | 99% |
50% | 97% | 99% |
Relative risk (RR) for NH associated with binary risk factor | ||
|---|---|---|
RR = 1.5 | RR = 2.0 | |
Binary risk factor prevalence | Statistical power | |
10% | 71% | 99% |
20% | 86% | 99% |
50% | 97% | 99% |