Association between tonsillitis and newly diagnosed ankylosing spondylitis: A nationwide, population-based, case-control study.

ABSTRACT:

Objectives

To investigate the association between tonsillitis and the risk of newly diagnosed ankylosing spondylitis (AS).

Methods

We used 2003-2012 data from Taiwan's National Health Insurance Research Database to conduct this nationwide, population-based, case-control study. We identified AS patients newly diagnosed between 2005 to 2012 as the study group and selected age, sex and index-year matched (1:6) non-AS individuals as controls. The association between tonsillitis and risk of newly diagnosed AS was determined by calculating odds ratios (ORs) with 95% confidence intervals (CIs) using conditional logistic regression analysis.

Results

We identified 37,002 newly diagnosed AS cases and 222,012 matched non-AS controls. Patients with AS were more likely to have ton

SUBMITTER: Chao WC 

PROVIDER: S-EPMC6675079 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature