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Table 3 Distribution of clinical characteristics according to arrival time

From: Stroke awareness decreases prehospital delay after acute ischemic stroke in korea

Characteristics Early arrival (≤ 3 hours) (n = 132) Late arrival (> 3 hours) (n = 368) P
Age, years 68 (57-73) 66 (57-74) 1.000*
Gender, male (%) 80 (61) 228 (62) 0.784
NIHSS, score 5 (2-10) 3 (1-5) < 0.001*
Pre-morbid disability (mRS >2) (%) 7 (5) 11 (3) 0.232
Risk factors    
   Previous stroke (%) 43 (33) 73 (20) 0.003
   Hypertension (%) 85 (64) 231 (63) 0.740
   Diabetes (%) 27 (21) 107 (29) 0.055
   Hyperlipidemia (%) 13 (10) 59 (16) 0.083
   Current smoker (%) 35 (27) 115 (31) 0.308
   Atrial fibrillation (%) 21 (16) 23 (6) 0.001
   Coronary heart disease (%) 15 (11) 23 (6) 0.057
   Family history of stroke (%) 35 (27) 112 (30) 0.396
Study hospital located in Seoul (%) 84 (64) 240 (65) 0.744
Highly educated (≥12 years) (%) 36 (27) 80 (22) 0.196
Living alone (%) 11 (8) 55 (15) 0.054
Visit hospital regularly (%) 91 (69) 247 (67) 0.702
Presence of bystander at time of symptom onset (%) 92 (70) 263 (72) 0.701
Arrival through referral (%) 15 (11) 154 (42) < 0.001
Arrival by Ambulance (%) 71 (54) 111 (30) < 0.001
Knowledge by patient of thrombolysis (%) 34 (26) 58 (16) 0.011
Awareness of the patient/bystander that the initial symptom was stroke related (%) 75 (57) 104 (28) < 0.001
  1. Pearson's χ2 test and the *Mann-Whitney U test were used
  2. Median (25th-75th percentile)