Table 1. Comparison of selected demographic variables and hospitalization data of the patients in the two studied groups.
| Group non-LOS n = 37 |
Group before-LOS n = 39 |
P value and statistical test used | |
|---|---|---|---|
| Perinatal history | |||
| Birth weight [g], mean (SD) | 1142 (241) | 948 (237) | 0.0011T |
| Gestational age [weeks], mean (SD) | 28.6 (2.2) | 26.8 (2.3) | 0.0015T |
| Male gender | 21 (57%) | 16 (41%) | 0.169C |
| Vaginal delivery | 13 (35%) | 10 (26%) | 0.407C |
| Antenatal steroids | 9 (24%) | 12 (31%) | 0.577C |
| Hospitalization | |||
| Peripheral lymphocyte count on 5th DOL [cells/μl], median (IQR) | 2640.5 (1256.5–3363.8) | 1964.5 (1420–2350) | 0.350W |
| Late-onset sepsis | - | 39 | |
| Gram-positive | - | 28 (72%) | |
| Gram-negative | - | 7 (18%) | |
| Polymicrobial | - | 4 (10%) | |
| Septic shock | - | 5 (13%) | |
| Outcome | |||
| Death during hospitalization at NICU | 2 (5%) | 6 (15%) | 0.147C |
T–two-sided T test,
C—Chi-square test,
W–Wilcoxon test.
DOL—day of life, NICU—Neonatal Intensive Care Unit