Increased Blood Pressure Variability Is Associated with Worse Neurologic Outcome in Acute Anterior Circulation Ischemic Stroke

Table 2

Spearman rank correlation coefficient for blood pressure indices and mRS and mean ± SD values.

Variable	Mean ± SD	Spearman rho	value
0–24 hours ( patients, 4,714 vital sign readings)
SBP SD		0.22	0.002
DBP SD		0.15	0.03
SBP CV		0.18	0.01
DBP CV		0.14	0.04
SBP SV		0.22	<0.001
DBP SV		0.04	0.56
Mean SBP		0.14	0.04
Mean DBP		−0.07	0.33
0–72 hours ( patients, 9,539 vital sign readings)
SBP SD		0.23	0.002
DBP SD		0.09	0.19
SBP CV		0.20	0.01
DBP CV		0.12	0.09
SBP SV		0.23	<0.001
DBP SV		−0.01	0.90
Mean SBP		0.12	0.09
Mean DBP		−0.07	0.30
0–120 hours ( patients, 12,972 vital sign readings)
SBP SD		0.25	0.001
DBP SD		0.10	0.16
SBP CV		0.22	<0.001
DBP CV		0.13	0.08
SBP SV		0.25	0.002
DBP SV		0.00	0.99
Mean SBP		0.10	0.20
Mean DBP		−0.07	0.35