Baseline characteristics of the study groups
| Variable | Top tier MT evidence cases (n=64)* | Cases not meeting top tier evidence for MT (n=62)† | p Value |
|---|---|---|---|
| Demographic characteristics | |||
| Age (years) (mean±SD) | 64±15 | 62±13 | 0.473 |
| Male gender (%) | 47 | 52 | 0.595 |
| Race (%) | 0.991 | ||
| White | 47 | 47 | |
| Black | 53 | 53 | |
| Medical history (%) | |||
| Hypertension | 72 | 81 | 0.248 |
| Diabetes mellitus | 38 | 37 | 0.908 |
| Hypercholesterolemia | 38 | 48 | 0.217 |
| Atrial fibrillation | 33 | 29 | 0.646 |
| Smoking | 30 | 32 | 0.848 |
| Congestive heart failure | 11 | 16 | 0.433 |
| Coronary artery disease | 23 | 29 | 0.475 |
| Clinical and imaging characteristics | |||
| SBP (mm Hg) (mean±SD) | 155±25 | 160±32 | 0.323 |
| DBP (mm Hg) (mean±SD) | 88±18 | 92±22 | 0.257 |
| Glucose (mg/dL) (median, IQR) | 125 (95–158) | 122 (104–167) | 0.791 |
| Admission NIHSS score (median, IQR) | 16 (14–18) | 14 (7–18) | 0.427 |
| ASPECT score (median, IQR) | 10 (10–10) | 9 (8–10) | 0.001 |
| Intravenous thrombolysis (%) | 92 | 40 | <0.001 |
| Onset to tPA time (min) (median, IQR) | 117 (89–148) | 140 (102–207) | 0.108 |
| Good collateral score (%) | 45 | 40 | 0.510 |
| Intubation prior or during the procedure (%) | 16 | 34 | 0.020 |
| Symptom onset to groin puncture time (min) (median, IQR) | 234 (177–291) | 381 (268–454) | <0.001 |
| Door to groin puncture (min) (median, IQR) | 151 (115–190) | 149 (115–237) | 0.628 |
*Fulfilling American Heart Association class I level A recommendations.
†Not fulfilling American Heart Association class I level A recommendations.
ASPECT, Alberta Stroke Program Early CT; DBP, diastolic blood pressure; MT, mechanical thrombectomy; NIHSS, National Institutes of Health Stroke Scale; SBP, systolic blood pressure; tPA, tissue plasminogen activator.