Category | Total number | Percentage of total n = 138 | Number who survived | Survival rate % | χ2 (p value) |
<28 weeks | 9 | 6.5 | 1 | 11.1 | 29.24 (0.000) |
28 to 31 weeks | 46 | 33.3 | 22 | 47.8 | |
32 to 36 weeks | 74 | 56.5 | 62 | 83.8 |