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Odds of PTB (<37 weeks’ gestation) by type of ARD diagnosis. ARD, autoimmune rheumatic disease; APS, antiphospholipid syndrome; AS, ankylosing spondylitis; JIA, juvenile idiopathic arthritis; PA, psoriatic arthritis; PTB, preterm birth; RA, rheumatoid arthritis; SLE, systemic lupus erythematosus.
