TABLE 1.
(A,B) Level-1 and Level-2 features summary statistics and P-values.
| LVO 130 | w/o LVO 170 | p-Value | ||
| (A) | ||||
| Age | Mean | 79.69 | 73.19 | 2.00e-05 |
| 95% CI | 77.55–81.84 | 71.15–75.24 | ||
| Gender | Female | 84(64.6%) | 76(58.5%) | 7.05e-04 |
| Male | 46(35.4%) | 94(41.5%) | ||
| Limb weakness | Yes | 129(99.2%) | 126(74.1%) | 2.84e-11 |
| No | 1(0.8%) | 44(25.9%) | ||
| Left limb weakness | Yes | 59(45.4%) | 63(37.1%) | 1.56e-01 |
| No | 71(54.6%) | 107(62.9%) | ||
| Right limb weakness | Yes | 73(56.2%) | 70(41.2%) | 1.06e-02 |
| No | 57(43.8%) | 100(58.8%) | ||
| Facial weakness | Yes | 41(31.5%) | 44(25.9%) | 1.06e-05 |
| No | 11(8.5%) | 53(31.2%) | ||
| Unknown | 78 (60%) | 73(42.9%) | ||
| Left facial weakness | Yes | 19(14.6%) | 25(14.7%) | 5.74e-03 |
| No | 33(25.4%) | 72(42.4%) | ||
| Unknown | 78 (60%) | 73(42.9%) | ||
| Right facial weakness | Yes | 22(16.9%) | 19(11.2%) | 2.39e-04 |
| No | 30(23.1%) | 78(45.9%) | ||
| Unknown | 78 (60%) | 73(42.9%) | ||
| Speech deficits | Yes | 62(47.7%) | 72(42.4%) | 4.12e-01 |
| No | 68(52.3%) | 98(57.6%) | ||
| (B) | ||||
| Glasgow Coma Scale (GCS) | Mean | 10.70 | 13.68 | <2.20e-16 |
| 95% CI | 10.23–11.17 | 13.28–14.09 | ||
| NA | 9(6.9%) | 15(8.8%) | ||
| GCS_Eye | Mean | 3.18 | 3.83 | 6.69e-07 |
| 95% CI | 2.96–3.41 | 3.72–3.93 | ||
| NA | 32(24.6%) | 25(14.7%) | ||
| GCS_Verbal | Mean | 2.44 | 4.25 | <2.20e-16 |
| 95% CI | 2.14–2.74 | 4.02–4.48 | ||
| NA | 32(24.6%) | 25(14.7%) | ||
| GCS_Motor | Mean | 5.16 | 5.70 | 2.44e-05 |
| 95% CI | 4.96–5.36 | 5.56–5.85 | ||
| NA | 32(24.6%) | 25(14.7%) | ||
| Diastolic blood pressure | Mean | 84.50 | 83.90 | 8.04e-01 |
| 95% CI | 80.71–88.29 | 80.99–86.82 | ||
| NA | 56(43.1%) | 78(45.9%) | ||
| Systolic blood pressure | Mean | 154.82 | 162.40 | 5.90e-02 |
| 95% CI | 148.62–161.02 | 157.46–167.34 | ||
| NA | 56(43.1%) | 78(45.9%) | ||
| Diabetes mellitus | Yes | 30(23.1%) | 45(26.5%) | 5.91e-01 |
| No | 100(76.9%) | 125(73.5%) | ||
| Hypertension | Yes | 89(68.5%) | 118(69.4%) | 9.0e-01 |
| No | 41(31.5%) | 52(30.6%) | ||
| Smoker | Yes | 15(11.5%) | 47(27.6%) | 2.63e-03 |
| No | 62(47.7%) | 70(41.2%) | ||
| Unknown | 53(40.8%) | 53(31.2%) | ||
| Current smoker | Yes | 8(6.2%) | 22(12.9%) | 6.66e-02 |
| No | 69(53.1%) | 95(55.9%) | ||
| Unknown | 53(40.8%) | 53(31.2%) | ||
| EX smoker (quitted > 2 years) | Yes | 7(5.4%) | 25(14.7%) | 1.91e-02 |
| No | 70(53.8%) | 92(54.1%) | ||
| Unknown | 53(40.8%) | 53(31.2%) | ||
| Atherosclerosis | Yes | 3(2.3%) | 6(3.5%) | 2.31e-02 |
| Unknown | 127(97.7%) | 164(96.5%) | ||
| Atrial fibrillation | Yes | 48(36.9%) | 32(18.8%) | 7.22e-04 |
| Unknown | 82(63.1%) | 138(81.2%) | ||
| Cardiombolism | Yes | 8(6.2%) | 2(1.2%) | 3.98e-02 |
| Unknown | 122(93.8%) | 168(98.8%) | ||
| Valvular heart disease | Yes | 61(46.9%) | 86(50.6%) | 6.08e-01 |
| Unknown | 69(53.1%) | 84(49.4%) |
Continuous variables: means, 95% confidence intervals, number of missing values and their proportions, p-values were calculated through Student’s t-test. Discrete variables: contingency tables with figures and proportions, p-values were calculated through Fisher’s exact test (2 × 2 tables) or Pearson’s Chi-square test (multiple rows and columns tables). Boldfaced p-values indicated strong dependencies based on 1% significance level.