Table 1.

Descriptive statistics for data from the medical documentation of the Ljubljana Maternity Hospital (before discharge and at follow-up visits) (n = 117).

Variable	Mean/Standard Deviation/Range or n (%)
Multiple pregnancy, n (%)	30 (25.6%)
Gestational age at birth, wks	27.79/2.43/22–34
Gestational age at birth less than 28 weeks, n (%)	54 (46.2%)
Caesarean delivery, n (%)	64 (54.7%)
Birth weight, g	1014.99/264.78/370–1500
Percentile of birth weight	37.12/19.82/1–85
Birth weight equal or less than 1000 g, n (%)	57 (48.7%)
Birth length, cm	35.63/3.36/24–42
Percentile of birth length	50.85/27.39/1–97
Ponderal index	2.21/0.33/1.63–3.77
Intubation and respiratory support needed, n (%)	49 (41.9%)
Non-invasive ventilation needed, n (%)	82 (70.1%)
Oxygen supplementation needed, n (%)	88 (75.2%)
Brain lesion detected by ultrasound examination, n (%)	29 (24.8%)
Phototherapy for jaundice, n (%)	73 (62.4%)
Parenteral feeding needed, n (%)	113 (96.6%)
Tube feeding needed, n (%)	117 (100%)
Gestational age at start of per oral feeding, wks	34.51/1.18/32–40
Gestational age more than 34 weeks at start of per oral feeding, n (%)	46 (39.3%)
Weight at discharge from the maternity hospital, g	2242.59/458.73/1430–4500
FSD documented after discharge from the maternity hospital, n (%)	32 (27.35%)
Percentile of weight at last follow-up visit	27.91/23.28/1–90
Decrease in weight percentile from normal at birth to below 10th percentile at the last follow-up visit, n (%)	28 (23.9%)
Denver Developmental Screening test II.
-global developmental disorders, n (%)	5 (4.3%)
-gross motor skills disorders, n (%)	5 (4.3%)
-language development disorders, n (%)	18 (15.4%)

g = grams, cm = centimeters, wks = weeks, FSD = feeding and swallowing disorders.