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TABLE 1: 
Patient demographics for all patients and for the tPA-treated subgroup
VariableAll Patients(n = 55)Treated Patients Only(n = 22)
Age (y)
 Mean ± SD66.4 ± 16.167.9 ± 17.9
 Range26–9131–91
Sex (M:F)41:1514:8
No. treated with tPA2222
Onset-to-imaging time (h)
 Mean ± SD4.2 ±2.13.7 ±1.3
 Range1.5–13.51.5–6.8
Pre- to postcontrast imaging interval (min)
 Mean ± SD26.3 ±7.127.1 ±6.6
 Range8–5318–44
NIHSS score at baseline
 Median (50% range)9(4–15)12.5(9–16)
 Range0–282–28
NIHSS score at 24 hours
 Median (50% range)4(2–9)8(4.5–10.75)
 Range0–280–26