Table 2.

Clinical and perinatal characteristics of the infants who followed up for BSID-III test and those who lost to follow up.

Variable	Follow up (N = 44)	Lost to follow up (N = 16)	p-Value
Birth weight in grams (mean ± sd)	856 ( ± 280)	900 ( ± 237)	0.5
Gestational age (mean ± sd)	26 ( ± 2)	26 ( ± 2)	0.8
PMA at study (mean ± sd)	39 ( ± 2)	38.5 ( ± 2)	0.4
CRIB-II score (mean ± sd)	11 ( ± 3)	11 ( ± 3)	0.8
NEC surgery, n (%)	7 (15.9%)	3 (18.8%)	0.7
PDA ligation, n (%)	6 (13.6%)	2 (12.5%)	0.9
ROP surgery, n (%)	13 (29.5%)	3 (18.8%)	0.5
Post-natal steroids, n (%)	15 (34.1%)	2 (12.5%)	0.1
Oxygen therapy at 36 wk., n (%)	34 (77.3%)	14 (87.5%)	0.5
Inotropes, n (%)	21 (47.7%)	8 (50%)	0.2
IVH grade 3–4, n (%)	19 (43.2%)	7 (43.8%)	0.9
Moderate/severe injury on MRI at TEA, n (%)	25 (56.8%)	7 (43.8%)	0.4