| File Name [.zip] | Calculates the following: |
ChiSquar
| Pearson's Chi-squared statistics and p-value given a 2x2 table |
CIDiffP
| 95% confidence interval for the difference between 2 proportions or rates |
CIOR
| odds ratio and 95% confidence interval from logistic regression coefficient and SE |
CIProp
| 95% confidence interval for a proportion or rate (uses an iterative Excel macro) |
PowerM
| power for comparison of 2 means (eg, t-test) with equal sample size |
PowerMne
| power for comparison of 2 means (eg, t-test) with unequal sample size |
PowerP
| power for comparison of 2 proportions (eg, Chi-squared test) |
SmplSzM
| sample size to compare 2 means (t-test) given alpha, power, sigma, delta (easier) |
SSMExact
| sample size for t-test or ANOVA using exact methods, by iteration (more difficult) |
SmplSzP
| sample size to detect a specified difference in 2 proportions, given power, n, alpha |
SnsSpec
| sensitivity, specificity, and positive and negative predictive values from 2x2 table |
| Download All Calculators [.zip format] |
