Table 2.
Baseline clinical and imaging variables
| No reperfusion (n = 19) | Reperfusion (n = 20) | P value (test value) | |
|---|---|---|---|
| Mean age, y (SD) | 71.9 (10.3) | 70.3 (12.2) | 0.813 (Z = ‐0.239) |
| Female, % | 8 (42.1) | 6 (30.0) | 0.431 (χ 2 = 0.620) |
| Hypertension, % | 15 (78.9) | 13 (65) | 0.333 (χ 2 = 0.936) |
| Diabetes, % | 4 (21.1) | 5 (25.0) | 1.000 (χ 2 = 0.086) |
| Smoking, % | 5 (26.3) | 5 (25.0) | 0.925 (χ 2 = 0.009) |
| Hyperlipidemia, % | 6 (31.6) | 9 (45) | 0.389 (χ 2 = 0.742) |
| Atrial fibrillation, % | 10 (52.6) | 12 (60) | 0.643 (χ 2 = 0.215) |
| History of stroke/transient ischemic attack, % | 2 (10.5) | 6 (30.0) | 0.235 (χ 2 = 2.27) |
| Median baseline NIHSS (SD) | 11.5 (4.7) | 10.9 (7.6) | 0.461 (Z = −0.761) |
| ONT, min (SD) | 256 (86.2) | 217 (64.7) | 0.813 (Z = −1.55) |
| OIT, min (SD) | 206 (77.2) | 182 (66.7) | 0.380 (Z = −0.90) |
| Average volume on acute DWI, mL (SD) | 29.9 (36.9) | 8.6 (8.4) | 0.084 (Z = −1.73) |
| Average acute hypoperfusion (Tmax > 6 seconds) volume, mL (SD) | 94.2 (67.1) | 76.0 (45.7) | 0.667 (Z = −0.450) |
SD, standard deviation; NIHSS, National Institutes of Health Stroke Scale; ONT, onset to needle time; OIT, onset to acute MR perfusion imaging time.