Validity and reliability of Japanese version of MAPO index for assessing manual patient handling in nursing homes.

Abstract

Low back pain (LBP) among caregivers in Japanese nursing homes has long been considered an occupational health issue. This study aims to verify the reliability and validity of our developed Japanese version of the Movement and Assistance for Hospitalized Patients (J-MAPO) index, a risk assessment tool for LBP, in nursing homes. Two inspectors assessed 15 nursing homes using J-MAPO, and deduced three LBP risk levels as follows: low, moderate, and high risk. Caregivers in nursing homes responded to a self-administered questionnaire on LBP over the past 12 months. Data from 296 caregivers with no missing data were used. We further used logistic regression models to analyze the association between LBP as a dependent variable, and J-MAPO risk level as an independent variable. We used Cohen's kappa coefficient to assess inter-rater reliability to further assess the agreement between the two inspectors. The multivariate logistic regression analysis showed that the adjusted odds ratio and 95% confidence intervals for LBP increased progressively with J-MAPO risk level (Low-risk: 1.00; Moderate-risk: 1.70 [0.74-3.91]; High-risk: 2.67 [1.28-5.56]). Furthermore, the J-MAPO risk levels assessed by the two inspectors were in perfect agreement (κ = 1) observed for inter-rater reliability using Cohen's kappa coefficient. High inter-rater reliability and J-MAPO risk levels were associated with LBP. Therefore, our results suggest that the J-MAPO is a useful risk assessment tool for LBP in Japanese nursing homes.