Mortality rates
| Number of infants | Survival status at 1 year post-decision to intervene surgically | One-year mortality rates | ||||
| Unknown n (%) | Died n (%) | Survived n (%) | n (%, 95% CI) | Estimate of min to max | ||
| Entire cohort | 236 | 33 (14%) | 59 (25%) | 144 (61%) | 59/203 (29%, 23% to 36%) | 25%–39% |
| Confirmed NEC* | 189 | 30 (16%) | 41 (22%) | 118 (62%) | 41/169 (24%, 18% to 31%) | 22%–38% |
| Confirmed SIP* | 32 | 0 (0%) | 11 (34%) | 21 (66%) | 11/32 (34%, 19% to 53%) | 34%–34% |
| Laparotomy performed but unknown final diagnosis* | 3 | 2 (66%) | 0 | 1 (33%) | N/A | |
| No laparotomy performed | 12 | 1 (8%) | 7 (58%) | 4 (33%) | 7/11 (64%, 31% to 90%) | 58%–67% |
| Infants ≤1500 g | 189 | 26 (14%) | 50 (26%) | 113 (60%) | 50/163 (31%, 24% to 38%) | 26%–40% |
*Data only available for the 224 infants who underwent laparotomy.
NEC, necrotising enterocolitis.