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J Occup Environ Med. 2011 Sep;53(9):1061-7. doi: 10.1097/JOM.0b013e31822cfe5e.

Efficacy of the revised NIOSH lifting equation to predict risk of low back pain due to manual lifting: expanded cross-sectional analysis.

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  • 1National Institute for Occupational Safety and Health, Cincinnati, Ohio 45226, USA. trw1@cdc.gov

Abstract

OBJECTIVE:

To evaluate whether the Revised NIOSH Lifting Equation (RNLE) is a valid tool for assessing risk of low back pain (LBP) due to manual lifting by using combined data from two cross-sectional studies of 1-year prevalence.

METHODS:

Results from a symptom and occupational history questionnaire and RNLE analysis for 677 subjects employed in 125 manual lifting jobs at nine industrial sites were combined from two studies.

RESULTS:

The odds of LBP increased as the lifting index (LI) increased from 1.0 to 3.0. A statistically significant odds ratio (OR) was found for both the 1 < LI ≤ 2 (OR = 1.81) and the 2 < LI ≤ 3 categories (OR = 2.26). For jobs with an LI value greater than 3.0, however, the OR remained nonsignificant. The 2 < LI ≤ 3 group remained statistically significant after adjusting for age, gender, body mass index, and psychosocial factors.

CONCLUSIONS:

It is clear that as the LI increases, the risk of LBP increases. Longitudinal studies are needed.

(C)2011The American College of Occupational and Environmental Medicine

PMID:
21866048
[PubMed - indexed for MEDLINE]
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