Table 6 Sensitivity analyses: doubling doses based on the pooled analyses

a. cumulative tons of weights ≥20 kg handled

2.09 (95% CI 1.40–3.10) for appr. the 90th percentile of the studies included by Bergmann et al. [2]

6100 tons

2.15 per 10,000 tons (95% CI 1.39–3.34)

9000 tons

1.64 per 10,000 tons (95% CI 1.13–2.40)

14,000 tons

b. cumulative tons of weights ≥20 kg handled > 10 times/day

2.09 (95% CI 1.40–3.10) for appr. the 90th percentile of the studies included by Bergmann et al. [2]

6000 tons

2.24 per 10,000 tons (95% CI 1.42–3.54)

8600 tons

1.94 per 10,000 tons (95% CI 1.20–3.14)

10,500 tons

c. cumulative number [×  1000] of lifting and/or carrying operations of weights ≥20 kg

2.09 (95% CI 1.40–3.10) for appr. the 90th percentile of the studies included by Bergmann et al. [2]

218,000

11.86 per 10⁶ handlings (95% CI 2.99–47.06)

280,300

3.85 per 10⁶ handlings (95% CI 1.39–10.70)

514,000