Table 3 Injury rate per 1000 workers and Incidence Rate Ratio (IRR) (reference: SMPC 2005) in the metalworking industry after propensity score matching [IRR: incidence rate ratio; CI = confidence interval]
HICa | SMPCb | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
No. of injuries | Injury rate | 95% CI | IRR | 95% CI | No. of injuries | Injury rate | 95% CI | IRR | 95% CI | |
2005 | 33 | 4.24 | (3.20–5.27) | 0.37 | (0.24-0.54) | 86 | 11.49 | (9.12–13.86) | 1 | – |
2010 | 49 | 6.36 | (4.90–7.81) | 0.55 | (0.39–0.79) | 98 | 13.37 | (10.08–16.66) | 1.16 | (0.87–1.55) |