Sensitivity of different scenarios for the impact of lifting devices in healthcare settings on the annual prevalence of LBP and MSD injury claims in a hypothetical cohort of newly hired nursing staff during a 10-year follow-up period
| Scenario | Scenario variant* | LBP incidence (%) | OR | Annual prevalence of LBP (%) | Annual MSD injury claims per 100 workers | ||
|---|---|---|---|---|---|---|---|
| Without lifting devices | With lifting devices | Without lifting devices | With lifting devices | ||||
| Baseline scenario | Realistic: PIF=0.06 | 25 | 2.07 | 41.9 | 40.5 | 5.8 | 5.6 |
| Maximum: PIF=0.38 | 25 | 2.07 | 41.9 | 31.4 | 5.8 | 4.3 | |
| Second scenario | Realistic: PIF=0.06 | 20 | 2.07 | 36.7 | 35.3 | 5.1 | 4.9 |
| Maximum: PIF=0.38 | 20 | 2.07 | 36.7 | 26.8 | 5.1 | 3.7 | |
| Realistic: PIF=0.06 | 30 | 2.07 | 46.2 | 44.8 | 6.4 | 6.2 | |
| Maximum: PIF=0.38 | 30 | 2.07 | 46.2 | 35.4 | 6.4 | 4.9 | |
| Third scenario | Realistic: PIF=0.04 | 25 | 1.65 | 41.9 | 40.9 | 5.8 | 5.6 |
| Maximum: PIF=0.27 | 25 | 1.65 | 41.9 | 34.8 | 5.8 | 4.8 | |
| Realistic: PIF=0.07 | 25 | 2.50 | 41.9 | 40.2 | 5.8 | 5.5 | |
| Maximum: PIF=0.46 | 25 | 2.50 | 41.9 | 28.5 | 5.8 | 3.9 | |
*The realistic scenario reflects pooled estimates from observational and experimental studies, while the maximum scenario reflects the maximum gain with complete elimination of manual lifting of patients.
LBP, low back pain; MSD, musculoskeletal disorder; PIF, potential impact fraction.