Table 1 Comparison of clinical features between E. coli-EOD group and E. coli-LOD group
Characteristics | E. coli-EOD (n = 46) | E. coli-LOD (n = 48) | χ2/t/z value | P |
|---|---|---|---|---|
Maternal | ||||
Age, n (%) | ||||
< 20 years | 2 (4.35) | 1 (2.08) | 0.001 | 0.970 |
≥ 35 years | 4 (8.70) | 8 (16.67) | 1.34 | 0.247 |
Regular antenatal screening, n (%) | 38 (82.61) | 41 (85.42) | 0.138 | 0.710 |
Cesarean section, n (%) | 20 (43.48) | 14 (29.17) | 2.081 | 0.155 |
Prenatal hormone usage, n (%) | 4 (8.70) | 14 (29.17) | 5.362 | 0.020 |
PROM, n (%) | 8 (17.39) | 7 (14.58) | 0.138 | 0.710 |
GDM, n (%) | 17 (36.96) | 4 (8.33) | 11.091 | 0.001 |
Intrapartum temperature ≥ 37.5 °C, n (%) | 24 (52.17) | 1 (2.08) | 30.189 | 0.000 |
Gestational vaginitis, n (%) | 10 (21.74) | 2 (4.17) | 6.513 | 0.011 |
Gestational bacteriuria, n (%) | 7 (15.22) | 0 (0.00) | 5.839 | 0.016 |
Chorioamnionitis, n (%) | 28 (60.87) | 9 (18.75) | 17.459 | 0.000 |
Positive E. coli culture in placental swab or cervical secretions, n (%) | 21 (45.65) | 1 (2.08) | 24.873 | 0.000 |
Neonatal | ||||
Gender (case, male / female) | 30/16 | 31/17 | 0.021 | 0.880 |
Gestational age, median (IQR), weeks | 39.8 (39,40.7) | 37.1 (32.73,39.28) | 4.253 | 0.000 |
Preterm, n (%) | 4 (8.70) | 20 (41.67) | 13.433 | 0.000 |
Birth weight, median (IQR), grams | 3400 (2983,3663) | 2875 (1765,3375) | 3.138 | 0.002 |
Low birth weight, n (%) | 4 (8.70) | 17 (35.42) | 9.667 | 0.002 |
Small for gestational age, n (%) | 0 (0.00) | 2 (4.17) | – | 0.495a |
Asphyxia, n (%) | 3 (6.52) | 6 (12.5) | 0.402 | 0.526 |
MSAF, n (%) | 26 (56.52) | 1 (2.08) | 34.002 | 0.000 |
Breast-feeding, n (%) | 40 (86.96) | 32 (66.67) | 5.394 | 0.022 |
Mechanical ventilation, n (%) | 25 (54.35) | 7 (14.58) | 16.542 | 0.000 |
Duration of mechanical ventilation, median (IQR), days | 3.0 (1.5,4.5) | 5.0 (3.0,10.0) | 0.754 | 0.456 |
Shortness of breath, n (%) | 38 (82.61) | 16 (33.33) | 23.330 | 0.000 |
Fever, n (%) | 2 (4.35) | 26 (54.17) | 27.880 | 0.000 |
Convulsions, n (%) | 2 (4.35) | 2 (4.17) | 0.000 | 1.000 |
Poor response, n (%) | 3 (6.52) | 3 (6.25) | 0.000 | 1.000 |
Jaundice, n (%) | 0 (0.00) | 1 (2.08) | – | 1.000a |
Nosocomial infection, n (%) | 0 (0.00) | 18 (37.50) | 21.340 | 0.000 |
Duration of UVC, mean ± SD, days | 4.00 ± 1.79 | 6.11 ± 3.14 | 1.483 | 0.162 |
Duration of PICC, median (IQR), days | 30.00 (10.50,67.00) | 28.00 (17.00,52.50) | 0.153 | 0.881 |
Length of hospitalization, median (IQR), days | 13.5 (8,16) | 16 (14,30) | 2.794 | 0.005 |
Mortality, n (%) | 3 (6.52) | 2 (5.32) | 0.002 | 0.961 |