Table 5. Neurodevelopmental outcomes on psychomotor development test according to IVH grade.

	Test 1				Test 2
	Normal development	Mild delay	Moderate delay	Severe delay	Normal development	Mild delay	Moderate delay	Severe delay
IVH
0	34 (54%)	13 (21%)	12 (19%)	4 (6%)	49 (77%)	12 (19%)	1 (2%)	1 (2%)
1	15 (47%)	13 (41%)	4 (12%)	0	24 (75%)	5 (16%)	2 (6%)	1 (3%)
2	8 (23%)	13 (37%)	11 (31%)	3 (9%)	23 (65%)	6 (17%)	3 (9%)	3 (9%)
3	4 (17%)	7 (29%)	10 (42%)	3 (12%)	12 (50%)	7 (29%)	4 (17%)	1 (4%)
4	0	2 (16%)	5 (42%)	5 (42%)	1 (9%)	3 (25%)	4 (33%)	4 (33%)
	χ2=44.235; p<0.001				?χ2=50.639; p<0.001

IVH = intraventricular hemorrhage