Table 2

Comparison between disease positive and disease negative subjects for time to CT and time to registration

Time intervalDisease positive
N=194
Disease negative
N=2218
p Value
Median time (hours)IQR (hours)Median time (hours)IQR (hours)
Headache onset to CT6.43.5–27.112.65.5–48.0<0.001
Headache onset to registration4.51.7–22.79.62.8–46.0<0.001
Registration to CT1.91.2–2.82.51.5–3.9<0.001