Demographic and baseline characteristics of patients in the UTO group and the control group
| UTO group (n=42) | Control group (n=62) | P values | |
| Gender (male/female) | 22/20 | 36/26 | 0.567 |
| Age (year) | 63.93±14.00 | 70.39±13.42 | 0.020 |
| TOAST classification | |||
| Large-artery atherosclerosis | 22 | 27 | 0.376 |
| Cardioembolism | 4 | 12 | 0.173 |
| Small-vessel occlusion | 15 | 18 | 0.473 |
| Stroke of other determined aetiology | 0 | 1 | 0.408 |
| Stroke of undetermined aetiology | 1 | 4 | 0.341 |
| Anterior/posterior cerebral circulation | 23/19 | 48/14 | 0.015 |
| Risk factors (%) | |||
| Hypertension | 28 (66.7) | 45 (72.6) | 0.518 |
| Coronary heart disease | 25 (59.5) | 26 (41.9) | 0.078 |
| Diabetes | 16 (38.1) | 18 (29.0) | 0.334 |
| Hyperlipoidaemia | 29 (69.0) | 34 (54.8) | 0.146 |
| Hyperhomocysteinaemia | 16 (38.1) | 17 (27.4) | 0.251 |
| Atrial fibrillation | 7 (16.7) | 12 (19.4) | 0.727 |
| Last seen normal (LSN) to thrombolysis (min) | 538.05±167.71 | 155.76±59.81 | <0.001 |
TOAST, Trial of Org 10172 in Acute Stroke Treatment; UTO, unknown time of onset.