Table 4.

Frequencies of indicators of hypotension, and indicators of white matter damage and cerebral palsy diagnosis (row percents).

Exposures & outcomes		Lowest Q§	Vaso- pressor¶	Labile MAP†	Ultrasound		Cerebral palsy
					VM	EL	Q	D	H	N
Lowest Q§	Yes		44	42	13	6	6	3	2	216
	No		19	19	9	7	6	4	2	825
Vasopressor¶	Yes	38		30	12	6	6	4	2	252
	No	15		22	10	7	6	4	2	789
Labile MAP†	Yes	37	31		10	7	7	3	1	247
	No	16	22		10	7	6	4	2	794
Ventriculo-megaly	Yes	26	29	23		28	28	9	9	105
	No	20	24	24		5	4	3	1	936
Echolucent lesion	Yes	18	22	25	40		33	7	12	73
	No	21	24	24	8		4	3	1	968
Quadriparesis	Yes	22	23	27	44	38		0	0	64
	No	21	24	24	8	5		4	2	977
Diparesis	Yes	19	24	22	24	14	0		0	37
	No	21	24	24	10	7	6		2	1004
Hemiparesis	Yes	26	26	16	47	47	0	0		19
	No	21	24	24	9	6	6	4		1022
Maximum N		216	252	247	105	73	64	37	19	1041
Row percent		21	24	24	10	7	6	4	2

^§Low Q: lowest MAP recorded in the first 24 hours, in the lowest quartile for gestational age

^¶Vaso: treatment for hypotension with a vasopressor in the first 24 hours with any vasopressor (dopamine, dobutamine, and epinephrine)

^†Labile: labile blood pressure, defined as the upper quartile of the difference in the lowest and highest MAP

VM= Moderate/Severe ventriculomegaly; EL=Echolucenct lesion

Q= Quadriparesis; D= Diparesis; H=Hemiparesis