Expected sensitivity | Desired width of CI | Confidence level | Number of disease cases needed | Sample size | ||
---|---|---|---|---|---|---|
Prevalence rate 10% | Prevalence rate 15% | Prevalence rate 20% | ||||
0.8 | 0.06 | 0.95 | 715 | 7150 | 4767 | 3575 |
0.8 | 0.1 | 0.95 | 264 | 2640 | 1760 | 1320 |
0.9 | 0.06 | 0.95 | 417 | 4170 | 2780 | 2085 |
0.9 | 0.1 | 0.95 | 158 | 1580 | 1053 | 790 |
0.95 | 0.06 | 0.95 | 238 | 2380 | 1587 | 1190 |
0.95 | 0.1 | 0.95 | 94 | 940 | 627 | 470 |
0.96 | 0.06 | 0.95 | 200 | 2000 | 1333 | 1000 |
0.96 | 0.1 | 0.95 | 81 | 810 | 540 | 405 |
0.97 | 0.06 | 0.95 | 161 | 1610 | 1073 | 805 |
0.97 | 0.1 | 0.95 | 68 | 680 | 453 | 340 |
0.98 | 0.06 | 0.95 | 123 | 1230 | 820 | 615 |
0.98 | 0.1 | 0.95 | 55 | 550 | 367 | 275 |
0.99 | 0.06 | 0.95 | 87 | 870 | 580 | 435 |
0.99 | 0.1 | 0.95 | 44 | 440 | 293 | 220 |