Women in the OTIS Pregnancy Project (657 RA, 170 JIA vs 564 without autoimmune dz) - preterm delivery (PTD) was increased in RA & JIA (RR 2.09 & 1.81) vs control; maternal activity was assoc w/ PTD (ARR 1.58 & 1.52), steroids had a 2-5X risk of PTD https://t.co/bWIHz0s1PV