Table 1.
Overview of the demographic data for the cohort.
| Variables | Levels | Count | Percentage (%) | |
|---|---|---|---|---|
| Categorical variables | ||||
| Sex | Male | 60 | 44.8 | |
| Female | 74 | 55.2 | ||
| Diet | Formula | 40 | 29.9 | |
| Breastmilk | 64 | 47.8 | ||
| Formula and breastmilk | 30 | 22.4 | ||
| Delivery | Vaginal | 45 | 33.6 | |
| Caesarean | 89 | 66.4 | ||
| NEC | Yes | 12 | 9.0 | |
| No | 122 | 91.0 | ||
| Sepsis | Yes | 8 | 6.0 | |
| No | 126 | 94.0 | ||
| Died | Yes | 7 | 5.2 | |
| No | 127 | 94.8 | ||
| Antenatal antibiotics | Yes | 90 | 67.2 | |
| No | 44 | 32.8 | ||
| Neonatal antibiotics | Yes | 126 | 94.0 | |
| No | 8 | 6.0 | ||
| Chorioamnionitis | Yes | 58 | 43.3 | |
| No | 76 | 56.7 | ||
| Preeclampsia | Yes | 20 | 14.9 | |
| No | 114 | 85.1 | ||
| Maternal diabetes | Yes | 24 | 17.9 | |
| No | 110 | 82.1 | ||
| Continuous variables | Mean/median | |||
| Gestational age at birth | 28.3/28.1 weeks | |||
| Gestational age at sample collection | Admission | 29.3/29.3 | ||
| Discharge | 35.3/35.9 | |||
| Days on antibiotics prior to sample collection | Admission | 3.3/3 | ||
| Discharge | 9.4/5 | |||
| Weight at birth | 1193/1086 g | |||
| Weight at discharge | 2448/2425 g | |||
NEC necrotising enterocolitis, ROP retinopathy of prematurity.