Heavy Lifting and Spontaneous Abortions
Excerpt: The study by Lee and Jung (2012) recently published in Workplace Health and Safety concluded that, “A collective effort is needed on the parts of employers, employees, occupational health nurses, and the government to protect working women from lifting heavy items while pregnant” (p. 25). However, that conclusion over-reaches their data and consequently is not supported. First, inconsistencies existed in the odds ratios (ORs), indicating uncertainties in the stability of the statistical findings. Second, the study used a nonexperimental design with low internal validity, preventing conclusions about causation due to the possibility of external intervening variables.
Nolen, Kalie; and Glenn, L. Lee. 2012. Heavy Lifting and Spontaneous Abortions. Workplace Health and Safety. Vol.60(7). 287-288. ISSN: 2424-7782