Effective some preventive interventions for MSDs on district hospital nurses 24 Research has shown the effectiveness of a number of interventions to prevent MSDs (propaganda, education, training, physical exercises) on nurses: a significant reduction in the overall prevalence of MSDs (from 75.4% to 53.1%) and in each position, significantly improved knowledge, attitude and practice on MSDs in the intervention group; significant improvement in quality of life (average increase from 50.08 to 52.33), anxiety level (average reduction from 4.23 to 3.85) as well as some decrease daily activities and recreational activities of nurses..