| Gestation | 23 weeks | 24 weeks | 25 weeks |
| N | 18 | 59 | 45 |
| n with no CPR at delivery | 17 | 53 | 39 |
| n CPR alone at delivery | 1 | 2 | 4 |
| IVH (Grade 3/4) in babies with CPR alone | 1:1 (100%) | 1:2 (50%) | 2:4 (50%) |
| n with CPR and drugs at delivery | 0 | 4 | 2 |
| IVH (Grade 3/4) in babies with CPR and drugs | 0:0 | 3:4 (75%) | 2:2 (100%) |
| CPR alone in outborn babies | 1 (100%) | 1 (50%) | 2 (50%) |
| CPR and drugs in outborn babies | 0 | 4 (100%) | 1 (50%) |
| Died | 14 | 25 | 12 |
| n Survived | 4 (22%) | 34 (57%) | 33 (73%) |
| Survival Inborn:Outborn | 3:1 (75%) | 24:10 (70%) | 22:11 (66%) |