The reverse cumulative distribution plot: a graphic method for exploratory analysis of antibody data.

Serologic data often have a wide range and commonly do not approximate a normal distribution. Means, medians, SDs, or other conventional numerical summaries of antibody data may not adequately or fully describe these complex data. The reverse cumulative distribution plot is a graphic tool that completely displays all the data, allows a rapid visual assessment of important details of the distribution, and simplifies comparison of distributions.