| Variables | AOR | 95% CI | p-value | |
| Lower | Upper | |||
| Full/first model | ||||
| Birth weight |
|
|
|
|
| Very low birth weight | 1.917 | 0.098 | 37.487 | 0.668 |
| Low birth weight | 0.830 | 0.065 | 10.646 | 0.886 |
| Normal weight | Reference |
|
|
|
| Gestational age at birth |
|
|
|
|
| Less than 28 weeks | 46.539 | 4.297 | 503.998 | 0.002 |
| 28 - 33 weeks | 3.975 | 0.638 | 24.757 | 0.139 |
| 34 weeks and above | Reference |
|
|
|
| Apgar score in the 5th minutes |
|
|
|
|
| Less than 7 | 2.681 | 0.406 | 17.706 | 0.306 |
| 7 and above | Reference |
|
|
|
| Immediately cried at birth |
|
|
|
|
| No | 122.444 | 9.530 | 1573.228 | <0.001 |
| Yes | Reference |
|
|
|
| History of resuscitation |
|
|
|
|
| Yes | 40.433 | 4.747 | 344.388 | 0.001 |
| No | Reference |
|
|
|
| History of invasive procedure |
|
|
|
|
| Yes | 3.086 | 0.526 | 18.093 | 0.212 |
| No | Reference |
|
|
|
| Reduced/last model | ||||
| Gestational age at birth |
|
|
|
|
| less than 28 weeks | 126.188 | 14.554 | 1094.060 | <0.001 |
| 28 - 33 weeks | 7.132 | 1.421 | 35.806 | 0.017 |
| 34 weeks and above | Reference |
|
|
|
| Immediately cried at birth |
|
|
|
|
| No | 54.271 | 5.970 | 493.395 | <0.001 |
| Yes | Reference |
|
|
|
| History of resuscitation |
|
|
|
|
| Yes | 54.406 | 6.807 | 434.851 | <0.001 |
| No | Reference |
|
|
|