Table 4 A comparison of injury rates deemed to be ‘severe’ between sexes and mine licensing status
Overall injury rates deemed “severe” | Severe injury rates at unlicensed sites | Severe injury rates at licensed sites | Rate ratio (95% CI) | P-value | |
|---|---|---|---|---|---|
Both sexes | 42 injuries / 2245 person years =1.9 injuries/100 person years | 14 injuries / 995 person years =1.4 injuries/100 person years | 28 injuries / 1250 person years =2.2 injuries/100 person years | 0.64 (0.32–1.18) | 0.15 |
Males | 41 injuries / 2128 person years =1.9 injuries/100 person years | 14 injuries / 975 person years =1.4 injuries/100 person years | 27 injuries / 1153 person years =2.3 injuries/100 person years | 0.61 (0.31–1.16) | 0.14 |
Females | 1 injuries / 117 person years =0.9 injuries/100 person years | 0 injuries / 20 person years =0 injuries/100 person years | 1 injuries / 97 person years =1.0 injuries/100 person years | / | 0.82 |
Rate Ratio | / | 2.3 (0.43–47) | |||
P-value | 0.75 | 0.45 |