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Table 2 Analyses of parameters associated with systolic and diastolic BP in patients with acute IS

From: Initial blood pressure is associated with stroke severity and is predictive of admission cost and one-year outcome in different stroke subtypes: a SRICHS registry study

  Systolic BP (mmHg) Diastolic BP (mmHg)
  ≤ 110 111 ~ 210 ≥ 211 p ≤ 70 71 ~ 110 ≥ 111 p
  n = 40 n = 1119 n = 14   n = 154 n = 973 n = 46  
Age, year 71.5 (56.8,76.5) 69 (59,78) 63.5 (58,77) 0.74 73 (63,80) 69 (58,77) 60.5 (53.3,70.8) < 0.001*
Gender (F/M) 15/25 429/690 9/5 0.14 67/87 368/605 18/28 0.4
Initial NIHSS score 6 (3.3,10) 4 (2,8) 7.5 (3.8,15) 0.03* 4 (2,8) 5 (2,8) 5 (2,11) 0.24
Admission cost, USD 1784
(1043.9, 4905.1)
1199.4
(844.5, 1975.7)
2315.0
(1556.7, 5395.3)
< 0.001* 1264.5
(893.1, 2556.4)
1201.1
(841.6, 1953.2)
1499.7
(1048.2, 2912.4)
0.01*
Length of stay, day 23.5 ± 23.58 14.43 ± 15.06 22.86 ± 21.73 < 0.001 15.53 ± 19.04 14.71 ± 15.1 15.24 ± 13.76 0.820
One-year mRS score 1.5 (1,5.3) 1 (1,4) 5 (1,6) 0.03* 1 (1,4) 1 (1,4) 2 (1,4) 0.41
Hypertension, % 40.0 63.4 78.6 0.01* 55.2 63.8 67.4 0.1
Diabetes mellitus, % 22.5 30.3 50.0 0.16 24.7 31.0 32.6 0.26
Heart rate, bpm 82 (71.5,89.5) 74 (65,84) 77.5 (73.5, 97.3) 0.002* 72 (62,82) 74 (65,84) 85.5 (75.8,98.2) < 0.001*
Previous stroke, % 41.7 37.5 38.5 0.88 35.7 38.0 35.0 0.81
Heart disease, % 37.5 32.7 21.4 0.54 44.8 30.7 34.8 0.02*
Hemoglobin, mg/dl 13.9 (11.7, 14.7) 13.8 (12.5, 15) 12.6 (10.6, 14.5) 0.19 13.2 (11.8,14.5) 13.8 (12.6,15.1) 14.1 (13.1,15.8) < 0.001*
BUN/Cr ≥ 15, n (%) 18 (51.4) 401 (44.1) 2 (16.7) 0.11 66 (51.6) 343 (43.4) 12 (31.6) 0.07
Infection, n (%) 13 (32.5) 197 (17.6) 4 (28.6) 0.03* 32 (20.8) 171 (17.6) 11 (23.9) 0.38
  1. Median (Q1, Q3) is reported for continuous variables and number (%) for categorical variables. BP blood pressure, IS ischemic stroke, F female, M male, USD US dollar, One US dollars = 30 New Taiwan dollars, Previous stroke = history of previous stroke, Heart disease = history of heart disease, bpm beats per minute, NIHSS National Institutes of Health Stroke Scale, mRS modified Rankin scale, BUN/Cr blood urea nitrogen to creatinine ratio. * p value < 0.05