Table 1.

Percentage of patients (N = 320) in the 91 to 180-minute subgroups with a specific baseline National Institutes of Health Stroke Scale (NIHSS)score^*

Baseline NIHSS score	tPA-treated patients, % (n = 153)	Patients given placebo, % (n = 167)
0-5	19.0	4.2
6-10	24.2	27.5
11-15	17.0	21.0
16-20	21.6	19.8
>20	18.3	27.5
tPA = tissue plasminogen activator

^*From Marler etal.²