Table 1:
Univariable analysis of characteristics associated with perfusion imaging selection
| Perfusion Selection (n = 76) | NCCT Selection (n = 138) | P Value | |
|---|---|---|---|
| Age (yr) | <.001 | ||
| Mean (SD) | 72.4 (14.1) | 64.4 (16.3) | |
| Male, No. (%) | 26 (34.2) | 61 (44.2) | .154 |
| Onset to arrival time (min) | .520 | ||
| Median (IQR) | 245 (123.5–300.0) | 241.5 (180.0–320.0) | |
| Initial NIHSS score | .018 | ||
| Median (IQR) | 18 (13–20) | 19 (16–22) | |
| Initial THRIVE score | .529 | ||
| Median (IQR) | 4 (3–5) | 4.5 (3–6) | |
| IV tPA prior to ERT, No. (%) | 31 (40.8) | 67 (48.6) | .275 |
| Location of occlusion, No. (%) | <.001 | ||
| Middle cerebral artery | 68 (89.5) | 91 (65.9) | |
| Internal carotid artery | 8 (10.5) | 47 (34.1) | |
| Mode of IA therapy | .028 | ||
| Lytic only | 3 (3.8) | 0 | |
| Mechanical only | 44 (57.9) | 95 (68.8) | |
| Lytic + mechanical | 29 (38.2) | 43 (31.2) | |
| Onset-to-GP time in minutes | .366 | ||
| Median (IQR) | 348 (225.75–399.75) | 309 (245.5–375.0) | |
| Symptomatic hemorrhage, No. (%) | 4 (5.3) | 17 (12.3) | .148 |
| TICI 2b/3 reperfusion, No. (%) | 46 (62.5) | 65 (47.1) | .036 |
| Year | .215 | ||
| 2007 | 4 (5.3) | 15 (10.9) | |
| 2008 | 9 (11.8) | 22 (15.9) | |
| 2009 | 18 (23.7) | 29 (21.0) | |
| 2010 | 17 (22.4) | 35 (25.4) | |
| 2011 | 15 (19.7) | 27 (19.6) | |
| 2012 | 13 (17.1) | 10 (7.2) |
Note:—IQR indicates interquartile range; IA, intra-arterial; GP, groin puncture.