Jonas Ranstam's website

MS/DOS

This is an epidemiological calculator for sample size, risk estimates, bias adjustment, etc., developed during the late 1980′s and early 1990′s.

• CAL (Rename to CAL.EXE)

Excel

This is an Excel workbook having some 30 sheets preprogrammed for simple confidence interval calculations.

• confint.xls

R

This is a set of scripts for the R software environment. Most of these are used in the R-server calculations.

• Confidence interval for a median (bootstrapped)
• Confidence interval for a difference in medians (bootstrapped)
• Confidence interval for a coefficient of variation (bootstrapped)
• Confidence interval for a kappa coefficient (bootstrapped)
• Confidence interval for a rank (using Monte Carlo simulation)
• Sample size estimation for a repeated measures mixed model with normal data
• Sample size estimation for a repeated measures mixed model with non-normal data
• P-value correction for multiplicity

STATA

This is a set of scripts for calculations with STATA.

• Linear regression with unknown breakpoint