Table 1. Patient demographics and clinical characteristics.
y, year; no., number; NIHSS, National Institutes of Health Stroke Scale; LKN, last known normal; hr., hour.
| Characteristics | Patient cohort (n = 50) |
| Age, median (IQR), y | 61 (55–71) |
| Female, no. (%) | 23 (46) |
| Race, no. (%) | |
| White | 33 (66) |
| Black/African American | 8 (16) |
| Asian | 3 (6) |
| Other/not listed | 6 (12) |
| Baseline medical history, no. (%) | |
| Atrial fibrillation | 5 (10) |
| Coronary artery disease | 6 (12) |
| Diabetes mellitus | 10 (20) |
| Hypertension | 34 (68) |
| Hyperlipidemia | 24 (48) |
| Prior stroke | 4 (8) |
| NIHSS at admission, median (IQR)* | 5 (3–8) |
| NIHSS at pMRI exam, median (IQR)† | 4 (1–11) |
| Time from LKN to pMRI exam, median (IQR), hr‡ |
37 (19–82) |
| Discharge modified Rankin scale score, median (IQR) |
3 (1–4) |
*NIHSS values at admission were unavailable for four patients.
†NIHSS values at pMRI exam were unavailable for five patients.
‡LKN was unknown for five patients.