Comparison of ‘Power for Cross-sectional studies’ to other public
software programs.
Date last tested: 7/11/05.
|
CI%, n1, p1, n2, p2 |
|||||||
Data input |
95%, 100, 20%, 200, 10% |
95%, 100, 10%, 200, 20% |
95, 474, 45%, 255, 35.29% |
95, 474, 35.29%, 255, 45% |
||||
software |
Power |
Power with continuity correction |
Power |
Power with continuity correction |
Power |
Power with continuity correction |
Power |
Power with continuity correction |
OpenEpi |
67.23% |
60.14% |
59.21% |
52.41% |
71.88% |
69.11% |
72.91% |
70.15% |
PEPI |
65.78% |
59.25% |
60.09% |
52.65% |
72.12% |
69.32% |
72.66% |
69.93% |
EPI 505 |
67.1% |
59.3 |
59.1% |
52.6% |
71.7% |
69.2% |
72.7% |
69.8% |
Confidence
interval CI; number of exposed ‘n1’; prevalence of disease among
exposed ‘p1’; number of non-exposed ‘n2’; prevalence of
disease among non-exposed group ‘p2’.
Reference:
· PEPI: Abramson JH and Gahlinger PM (2001). Computer
program for epidemiologists: PEPI version 4.0. Sagebrush Press,
· Epidemiology 505 - Emory University (version - 11 October 2000)