Assessing the Utility of Diagnostic Criteria: A Multisite Study on Gender Identity Disorder

Our results indicate that patients' symptoms were interpreted in a similar fashion in all four countries. However, we did not find support for the treatment of A and B as two separate criteria. We recommend the use of NIRT in future studies, especially in studies with small sample sizes and/or with data that show a poor fit to parametric IRT models. Paap MCS, Kreukels BPC, Cohen‐Kettenis PT, Richter‐Appelt H, de Cuypere G, and Haraldsen IR. Assessing the utility of diagnostic criteria: A multisite study on gender identity disorder.