Fig. 4From: The implications of outcome truncation in reproductive medicine RCTs: a simulation platform for trialists and simulation studyType 1 error of a t-test in the continuous outcome simulation study at a 5% significance level (core scenarios). Colour indicates the total starting sample size in each simulated trial (light green = 100, orange = 200, dark green = 500, pink = 1000). The horizontal line indicates the nominal levelBack to article page