Cross-sectional associations of low body mass index and being underweight with joint damage in Chinese patients with rheumatoid arthritis

Abstract Objective To characterize BMI in Chinese patients with RA vs US patients and examine its association with joint damage in Chinese patients. Methods Each of the 1318 patients from a real-world Chinese RA population was first stratified by gender and then individually age-matched with one Ame...

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Published in:Rheumatology advances in practice 2024-07, Vol.8 (3), p.rkae080
Main Authors: Pan, Jie, Wu, Tao, Zou, Yao-Wei, Li, Qi-Hua, Ouyang, Zhi-Ming, Ma, Jian-Da, Jia, Pei-Wen, Zheng, Hu-Wei, Lin, Jian-Zi, Lu, Ye, Yang, Ying, Chen, Le-Feng, Yang, Kui-Min, Dai, Jun, Dai, Lie
Format: Article
Language:English
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Summary:Abstract Objective To characterize BMI in Chinese patients with RA vs US patients and examine its association with joint damage in Chinese patients. Methods Each of the 1318 patients from a real-world Chinese RA population was first stratified by gender and then individually age-matched with one American RA patient from the US National Health and Nutritional Examination Survey 1999–2018. Data on BMI, bilateral hand radiographs and risk factors at enrolment were collected but radiographs were unavailable for the American patients. Logistic regression was used to evaluate the association of BMI with radiographic joint damage (RJD) in Chinese patients. Results Chinese patients had a significantly lower BMI [(weighted) median 21.8 vs 29.8 kg/m2; P 
ISSN:2514-1775
2514-1775
DOI:10.1093/rap/rkae080