Demographic characteristics of patients in the study
| Mean | SD | Minimum | Maximum | |
| Gestational age (weeks) | 31.28 | 2.59 | 25.00 | 36.00 |
| Birth weight (grams) | 1572.22 | 338.34 | 1200.00 | 2500.00 |
| Duration of stay in NICU (days) | 29.22 | 14.40 | 9.00 | 55.00 |
| Number | % | |||
| Multiple births | 9 | 50.0 | ||
| Sex | Male | 10 | 55.6 | |
| Female | 8 | 44.4 | ||
| Systemic condition | Cardiac problems, hydrocephalus | 1 | 5.6 | |
| Renal problems, hydronephrosis imperforate anus | 1 | 5.6 | ||
| Respiratory distress without other comorbidities | 11 | 61.1 | ||
| Respiratory distress, sepsis, cardiac problems | 1 | 5.6 | ||
| Respiratory distress, transfusions | 2 | 11.1 | ||
| Sepsis | 1 | 5.6 | ||
| Sepsis, transfusions | 1 | 5.6 | ||
NICU, neonatal intensive care units.