Validation of a claims-based algorithm to identify cases of ulcerative colitis in Japan.

ABSTRACT:

Background and aim

The prevalence of ulcerative colitis (UC) is increasing in Japan. Validated claims-based definitions are required to investigate the epidemiology of UC and its treatment and disease course in clinical practice. This study aimed to develop a claims-based algorithm for UC in Japan.

Methods

A committee of epidemiologists, gastroenterologists, and internal medicine physicians developed a claims-based definition for UC, based on diagnostic codes and claims for UC treatments, procedures (cytapheresis), or surgery (postoperative claims). Claims data and medical records for a random sample of 200 cases per site at two large tertiary care academic centers in Japan were used to calculate the positive predictive value (PPV) of the algorithm for three gold standards o

SUBMITTER: Ogino H 

PROVIDER: S-EPMC9298722 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature