Risk of Ankylosing Spondylitis in Patients With Endometriosis: A Population-Based Retrospective Cohort Study.

ABSTRACT:

Objectives

Previous research has shown a possible relationship between endometriosis and autoimmune diseases. However, the relationship between endometriosis and ankylosing spondylitis (AS) is lacking. Therefore, we intended to find possible associations between endometriosis and AS using ICD-9 coding data in a population-based retrospective cohort study in Taiwan.

Method

Data for this retrospective cohort study were collected from the Taiwan National Health Insurance Research Database (NHIRD) between 2000-2012. We collected 13,145 patients with endometriosis and a 78,870 non-endometriosis comparison cohort. Diagnoses of endometriosis and AS were defined by the International Classification of Diseases-9 (ICD-9-CM) code for at least 3 outpatients or 1 hospitalization. Propens

SUBMITTER: Yin Z 

PROVIDER: S-EPMC9240188 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature