Comparison of OpenEpi confidence intervals for a sample mean to other public software programs.

| Sample size, selected percentile (----% confidence interval)
Method | 100, 50 (95%CI) | 5, 50 (95%CI) | 10, 40 (95%CI) | 10, 40 (99.99%CI)
Confidence Interval (CI) based on Normal approximation | percentile (CI) | Percentile (CI) | percentile (CI) | percentile (CI)
OpenEpi | 50.5 (40, 61) | 3 (0.0, 5) | 4 (1, 8) | 4 (0, 10)
EpiInfo6@ (DOS version) | 50.5 (40.7, 60.3) | 3 (0.81, 5.19) | Not available | Not available

@ only 95% confidence interval for a Median is available.

EpiInfo6 (DOS version). Epidemiology program office, CDC. (EpiInfo software downloaded from ‘www.cdc.gov’).