@article {Croteau496, author = {Agathe Croteau}, title = {Occupational lifting and adverse pregnancy outcome: a systematic review and meta-analysis}, volume = {77}, number = {7}, pages = {496--505}, year = {2020}, doi = {10.1136/oemed-2019-106334}, publisher = {BMJ Publishing Group Ltd}, abstract = {This systematic review was conducted to help clarify the effect of lifting at work on pregnancy outcome, by focusing on specific exposure categories. A search in Medline and Embase identified 51 articles reporting association of spontaneous abortion (SA), preterm delivery (PTD) or small-for-gestational-age (SGA) infant with exposure to occupational lifting. A global validity score was assigned to each study and six potential sources of bias were considered in sensitivity analyses. For each exposure{\textendash}outcome combination, a summary risk estimate (RE) was obtained from all studies and from a subset of studies with high validity score, this latter summary RE was selected as a final result. Statistical heterogeneity was measured with I2 and Q tests and the possibility of a publication bias was also assessed. For each meta-analysis, the strength of evidence was established from explicit criteria. Heavy (or >=10 kg) loads often (or >=10x/day) lifted were associated with increased risks of SA (summary RE=1.31, 95\% CI 1.17 to 1.47) and PTD (summary RE=1.24, 95\% CI 1.07 to 1.43), with good strength of evidence. No association was identified with SGA, nor with lower exposure levels and SA or PTD. These results are reassuring for lower levels of exposure; however, observed associations can guide health professionals{\textquoteright} recommendations aimed at the prevention of SA and PTD for pregnant women who frequently lift (or >=10x/day) heavy (or >=10 kg) loads at work.R{\'e}sum{\'e}}, issn = {1351-0711}, URL = {https://oem.bmj.com/content/77/7/496}, eprint = {https://oem.bmj.com/content/77/7/496.full.pdf}, journal = {Occupational and Environmental Medicine} }