Table 1

Baseline characteristics among patients receiving intra-arterial therapy, pre-implementation versus post-implementation

VariablePre-implementation (n=113)Post-implementation (n=267)p Value
Age (years) (median (range))69 (34–92)70 (19–94)0.88
Female (n (%))68 (60.2)134 (50.2)0.07
White race (n (%))92 (81.4)204 (76.4)0.31
Admission NIHSS (mean (SD))16.7 (6.3)17.7 (7.4)0.21
Admission NIHSS,* 0–4 (n (%))4/107 (4.0)10/249 (4.0)0.92
Admission NIHSS, 5–15 (n (%))37/107 (35.0)82/249 (33.0)
Admission NIHSS, 16–25 (n (%))55/107 (51.4)125/249 (50.2)
Admission NIHSS, >25 (n (%))11/107 (10.3)32/249 (13.0)
Symptom onset to facility arrival (min) (median (range))218 (4–1060)200 (0–1524)0.11
Inter-hospital transfer (n (%))90 (80.0)188 (70.4)0.12
Off-hours (n (%))†68 (61.0)168 (63.0)0.69
  • *Missing admission NIHSS for 24 patients, with roughly the same missing pre versus post. Denominators are shown.

  • †Off-hours is before 07:00 and after 17:00 during weekdays (Monday–Friday) and all hours during weekends (Saturday–Sunday).

  • NIHSS, National Institutes of Health Stroke Scale.