Table 4 Injury rate per 1000 workers and Incidence Rate Ratio (IRR) (reference: SMPC 2005) in the construction 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 | 13.34 | (6.12–20.56) | 1.19 | (0.94–1.50) | 125 | 11.24 | (9.47–13.00) | 1 | – |
2010 | 49 | 2.47 | (1.85–3.10) | 0.22 | (0.15–0.33) | 103 | 9.46 | (6.71–12.21) | 0.84 | (0.65–1.09) |