MedCalc is a statistical software package for the biomedical sciences with an integrated spreadsheet for easy data input. Special features of the program are, amongst others, lots of graphs, ROC curve analysis, Kaplan-Meier survival plots, Bland & Altman plot, Deming and Passing & Bablok regression for method comparison, ANOVA, ANCOVA, repeated measures ANOVA. Certified for Windows Vista. Free trial available.