Table 2.

Blood Pressure Variability and Prognosis of the Study Subjects

Variables	All Subjects (n=349)	Non-Progressive Ischemic Stroke (n=265)	Progressive Ischemic Stroke (n=84)	P
Blood pressure variability
SBP at admission, mmHg	139.94±17.93	138.52±16.90	144.40±20.32	0.009
DBP at admission, mmHg	81.37±10.44	81.01±10.14	82.50±11.32	0.255
Average SBP (24h), mmHg	145.42±15.16	144.16±14.06	149.42±17.70	0.005
CV of average SBP (24h)	10.98±3.17	10.74±3.04	11.73±3.48	0.013
Average DBP (24h), mmHg	80.60±9.27	80.35±9.13	81.37±9.70	0.383
CV of average DBP (24h)	13.50±4.62	13.29±4.33	14.14±5.43	0.144
Average SBP (day), mmHg	146.70±15.28	145.50±14.27	150.50±17.67	0.009
CV of average SBP (day)	10.55±3.61	10.26±3.44	11.46±3.96	0.008
Average DBP (day), mmHg	81.27±9.53	81.09±9.39	81.82±10.01	0.541
CV of average DBP (day)	13.31±5.13	12.94±4.84	14.49±5.82	0.015
Average SBP (night), mmHg	141.72±18.44	140.23±17.18	146.42±21.38	0.007
CV of average SBP (night)	10.09±4.36	10.13±4.39	9.98±4.29	0.788
Average DBP (night), mmHg	78.77±11.43	78.37±11.35	80.05±11.62	0.240
CV of average DBP (night)	12.30±5.18	12.20±5.22	12.63±5.09	0.506
NIH Stroke Scale
At admission	4 (2–6)	4 (2–6)	5 (3–9.25)	<0.001
At discharge	3 (2–6)	3 (1–4)	7 (4–10.25)	<0.001
Modified Rankin Scale
Before admission	0 (0–1)	0 (0–1)	0 (0–1)	0.062
At discharge	2 (2–4)	2 (1–3)	4 (2–5)	<0.001
After 6 months	2 (1–3)	2 (1–2)	3 (2–4)	<0.001
Prognosis*
Improved at discharge	176 (50.43%)	134 (50.57%)	42 (50.00%)	0.928
Improved at 6 months	253 (72.49%)	202 (76.23%)	51 (60.71%)	0.006

Notes: *Improved prognosis was defined by the Modified Rankin Scale ≤2. A P-value <0.05 was presented in bold.

Abbreviations: SBP, systolic blood pressure; DBP, diastolic blood pressure; CV, coefficients of variation.