Standardised mortality ratio (SMR) for the study population categorised by attained age group
| Attained age group | Person years | Number of deaths | Crude mortality rate | Expected number of deaths | SMR (95% CI) |
| 0–<30 | 1859.9 | 3 | 161.3 | 2.4 | 1.24 (0.32 to 3.38) |
| 30–<40 | 3274.3 | 6 | 183.3 | 5.0 | 1.21 (0.49 to 2.51) |
| 40–<50 | 3275.8 | 5 | 152.6 | 8.9 | 0.56 (0.21 to 1.25) |
| 50–<60 | 3186.5 | 16 | 502.1 | 18.5 | 0.86 (0.51 to 1.37) |
| 60–<70 | 2853.8 | 18 | 630.7 | 33.4 | 0.54 (0.33 to 0.83) |
| 70–<80 | 1437.7 | 17 | 1182.5 | 35.0 | 0.49 (0.29 to 0.76) |
| ≥80 | 86.9 | 5 | 5753.7 | 5.9 | 0.85 (0.31 to 1.89) |
| Total | 15 974.8 | 70 | 438.2 | 109.1 | 0.64 (0.50 to 0.81) |