Table 2.
Patient characteristics in the stroke data. n (%) are displayed for dichotomous variables, mean and standard deviation (SD) for continuous variables.
| Variable | Training data | Temporal validation | External validation |
|---|---|---|---|
| Barthel index after 90 days: | 1025(58.4%) | 337(56.5%) | 494(56.5%) |
| Survival after 90 days: Yes | 1588(90.5%) | 546(91.6%) | 811(92.8%) |
| Prior stroke: Yes | 353(20.1%) | 137(23.0%) | 172(19.7%) |
| Diabetes mellitus: Yes | 436(24.9%) | 165(27.7%) | 229(26.2%) |
| Lenticulostriate arteries infarction: Yes | 188(10.7%) | 31(5.2%) | 64(7.3%) |
| Fever: Yes | 220(12.5%) | 51(8.6%) | 54(6.2%) |
| Neurological complications: Yes | 73(4.2%) | 26(4.4%) | 37(4.2%) |
| Gender: Female | 716(40.8%) | 270(45.3%) | 357(40.8%) |
| Age at event (in years) | 68.1(12.7) | 68.0(12.4) | 67.8(12.4) |
| NIHSS left arm | 0.6(1.2) | 0.6(1.1) | 0.6(1.2) |
| NIHSS right arm | 0.7(1.2) | 0.5(1.1) | 0.6(1.1) |
| NIHSS total score | 6.9(6.2) | 6.1(5.7) | 6.6(6.1) |
| Rankin Scalea | 3.1(1.4) | 2.4(1.6) | 2.5(1.6) |
NIHSS: National Institutes of Health Stroke Scale.
a
Overall functional impairments as rated on the Modified Rankin Scale 48–72 h after admission.