Table 2: Mortality according to birth weight category.
| Birth weight | Number who died | Number who survived | Mortality (per weight band) | Incidence Rate Ratio (95% CI) | RR (95% CI) |
| < 1000 g (n = 77) | 72 | 5 | 91.1% | 4.22 (3.10-5.72) | 2.34 (2.01-2.73) |
| 1000-1500 g(n = 125) | 68 | 57 | 54.4% | 1.08 (0.79-1.47) | 1.10 (0.89-1.35) |
| 1501-1999 g(n = 163) | 47 | 116 | 28.8% | 0.30 (0.21-0.43) | 0.41 (0.32-0.54) |