Table 2 Sample size calculation
From: Recruitment of emergency department patients to a prospective observational study
Prevalence Rates (%) | ||||||
|---|---|---|---|---|---|---|
Sensitivity | Specificity | Precision | Low | Medium | High | |
p = 0.05; CIa = 95% | 97% | 90% | 40.0 | 60.0 | 90.0 | |
Sample Size | ||||||
0.01 | 2796 | 1864 | 1243 | |||
0.015 | 1243 | 829 | 553 | |||
0.025 | 448 | 299 | 199 | |||
0.05 | 113 | 76 | 51 | |||
0.07 | 58 | 39 | 26 | |||
0.10 | 31 | 21 | 14 | |||