Table 4.
Univariate analysis comparing correctly diagnosed and misdiagnosed TIA patients.
| Correctly diagnosed (N = 92) | Misdiagnosed (N = 138) | Total (N = 230) | P-value | |
|---|---|---|---|---|
| Final TIA diagnosis | ||||
| TIA mimics | 41 (44.6%) | 55 (39.8%) | 96 | ˂0.0001⁎ |
| Possible TIA | 8 (8.7%) | 69 (50.0%) | 77 | |
| TIA | 43 (46.7%) | 14 (10.1%) | 57 | |
| aABCD2 (score > 3) | 55 (59.8%) | 77 (55.8%) | 132 | 0.549 |
| Gender (male) | 38 (41.3%) | 56 (40.6%) | 94 | 0.913 |
| Race | ||||
| White | 87 (94.6%) | 133 (96.4%) | 220 | 0.472 |
| Black or African American | 4 (4.3%) | 2 (1.4%) | 6 | |
| Hispanic | 1 (1.1%) | 2 (1.4%) | 3 | |
| Unavailable | 0 (0.0%) | 1 (0.8%) | 1 | |
| Length of hospital residence | ||||
| 1 day | 36 (39.1%) | 57 (41.3%) | 93 | 0.737 |
| 2 days | 31 (33.7%) | 50 (36.2%) | 81 | |
| ≥3 days | 24 (26.1%) | 30 (21.7%) | 54 | |
| Social history | ||||
| Tobacco use | 24 (26.1%) | 31 (22.5%) | 55 | 0.597 |
| Alcohol use | 31 (33.7%) | 39 (28.3%) | 70 | 0.380 |
| Diabetes mellitus | 36 (39.1%) | 32 (23.2%) | 68 | 0.009⁎ |
| Hypertension | 76 (82.6%) | 102 (73.9%) | 178 | 0.122 |
| Atrial Fibrillation, PAFb, flutter | 16 (17.4%) | 17 (12.3%) | 33 | 0.282 |
| Hyperlipidemia | 74 (80.4%) | 107 (77.5%) | 181 | 0.599 |
| Previous history of stroke event | 26 (28.3%) | 28 (20.3%) | 54 | 0.157 |
| Previous history of TIA event | 23 (25.0%) | 34 (24.6%) | 57 | 0.913 |
| Coronary artery disease | 46 (50.0%) | 45 (32.6%) | 91 | 0.007⁎ |
| Peripheral vascular disease | 11 (11.9%) | 16 (11.6%) | 27 | 0.910 |
| Carotid disease | ||||
| <50% Stenosis | 42 (45.6%) | 66 (47.8%) | 108 | 0.307 |
| 50–70% Stenosis | 10 (10.9%) | 15 (10.9%) | 25 | |
| >70% Stenosis | 5 (5.4%) | 2 (1.4%) | 7 | |
| Seizure disorder | 7 (7.6%) | 7 (5.1%) | 14 | 0.431 |
| History of migraine | 9 (9.8%) | 21 (15.2%) | 30 | 0.231 |
| COPD | 19 (20.6%) | 24 (17.4%) | 43 | 0.534 |
| Autoimmune disease | 2 (2.2%) | 2 (1.4%) | 4 | 0.680 |
| Coagulation disorders | 3 (3.3%) | 6 (4.3%) | 9 | 0.669 |
| History of cancer | 23 (25.0%) | 23 (16.6%) | 46 | 0.167 |
| Psychiatric illness | 34 (36.9%) | 59 (42.7%) | 93 | 0.380 |
| Kidney disease | 19 (20.6%) | 32 (23.2%) | 51 | 0.650 |
| Currently on dialysis | 0 (0.0%) | 1 (100%) | 1 | 0.413 |
| Antiplatelet (pre-hospitalization) | 55 (59.8%) | 75 (54.3%) | 130 | 0.363 |
| Oral anticoagulant (pre-hospitalization) | 13 (14.1%) | 9 (6.5%) | 22 | 0.055 |
| Altered mental status | 19 (20.6%) | 29 (21.0%) | 48 | 0.980 |
| Headache | 22 (23.9%) | 27 (19.6%) | 49 | 0.430 |
| Loss of consciousness | 1 (1.1%) | 2 (1.4%) | 3 | 0.812 |
| aABCD2 duration | ||||
| ˂10 Minutes | 13 (14.1%) | 17 (12.3%) | 30 | 0.909 |
| 10–59 Minutes | 20 (21.7%) | 32 (23.2%) | 52 | |
| ≥60 Minutes | 59 (64.1%) | 89 (64.5%) | 148 | |
| Seizure like activity | 2 (2.2%) | 3 (2.2%) | 5 | 1.000 |
⁎
P˂0.05 was considered statistically significant.
a
ABCD2: (Age, Blood pressure, Clinical, Duration, Diabetes).
b
PAF: Paroxysmal Atrial Fibrillation.