Table 5 Doubling doses based on the pooled analyses for men, core analysis

a. cumulative tons of weights ≥20 kg handled

1.98 per 10,000 tons (95% CI 1.20–3.29)

10,100 tons (95% CI 5800–38,800 tons)

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

2.08 per 10,000 tons (95% CI 1.22–3.53)

9500 tons (95% CI 5500–34,900 tons)

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

8.64 per 10⁶ handlings (95% CI 1.87–39.91)

321,400 (95% CI 188,000–1,106,600)