Impact of job adjustment, pain location and exercise on sick leave due to lumbopelvic pain in pregnancy: a longitudinal study

Objective: To identify factors associated with sick leave due to lumbopelvic pain (LPP) in pregnancy.Design: Prospective cohort study using participants from a randomized controlled trial (RCT) designed to study the effect of exercise during pregnancy on pregnancy related diseases.Setting: St. Olavs Hospital, Trondheim University Hospital and Stavanger University Hospital, April 2007 to December 2009.Subjects: Healthy pregnant women.Main outcome measures: Self-reported sick leave due to LPP in late pregnancy (gestation week 32-36).Results: In total, 532/716 (74%) women reported LPP at 32-36 weeks of pregnancy, and 197/716 (28%) reported sick leave due to LPP. Not receiving job adjustments when needed (Odds ratio, OR with 95% confidence interval, CI, was 3.0 (1.7-5.4)) and having any pain in the pelvic girdle versus no pain (OR 2.7 (1.3-5.6), OR 2.7 (1.4-5.2) and OR 2.2 (1.04-4.8)) for anterior, posterior and combined anterior and posterior pain in the pelvis respectively, were associated with sick leave due to LPP in late pregnancy. Also higher disability, sick listed due to LPP at inclusion and lower education, were significant explanatory variables. There was a trend of reduced risk for sick leave due to LPP when allocated to the exercise group in the original RCT (OR 0.7 (0.4-1.0)).Conclusion: Facilitating job adjustments when required might keep more pregnant women in employment. Furthermore, pain locations in pelvic area, disability, lower education and being sick listed due to LPP in mid pregnancy are important risk factors for sick leave in late pregnancy.