Table 1. Baseline characteristics of the training set and validation set.
| Features | Training set (n=151) | Validation set (n=134) | P-value |
| Age(years) | 48.88±14.46 | 53.22±14.52 | 0.012 |
| Sex | 0.104 | ||
| Male | 103(68.2%) | 78(58.2%) | |
| Female | 48(31.8%) | 56(41.8%) | |
| Etiology | 0.192 | ||
| Trauma | 74(49.0%) | 75(56.0%) | |
| Stroke | 67(44.4%) | 46(34.3%) | |
| Anoxia | 10(6.6%) | 13(9.7%) | |
| CRS-R total score | 5.00(3.00, 8.00) | 5.00(2.00, 8.00) | 0.771 |
| GCS total score | 9.00(7.00, 9.00) | 8.00(6.00, 9.00) | 0.208 |
| Serum albumin(g/L) | 37.48±4.14 | 36.67±4.45 | 0.111 |
| Hemoglobin(g/L) | 113.11±15.83 | 107.69±15.42 | 0.004 |
| Basic cardiopulmonary diseases | 0.521 | ||
| Presence | 18(11.9%) | 12(9.0%) | |
| Absence | 133(88.1%) | 122(91.0%) | |
| Level of consciousness | 0.604 | ||
| VS | 97(64.2%) | 90(67.2%) | |
| MCS | 54(35.8%) | 44(32.8%) | |
| Multiple injuries | 0.854 | ||
| Presence | 38(25.2%) | 35(26.1%) | |
| Absence | 113(74.8%) | 99(73.9%) | |
| EEG background activity | 0.288 | ||
| Lack of alpha rhythms | 75(49.7%) | 75(56%) | |
| Alpha rhythms exists | 76(50.3%) | 59(44%) | |
| N20 on SEP | 0.841 | ||
| Presence | 122(80.8%) | 107(79.9%) | |
| One or both absent | 29(19.2%) | 27(20.1%) | |
| BAEP grade | 0.006 | ||
| GradeI-II | 82(54.3%) | 51(38.1%) | |
| GradeIII-IV | 69(45.7%) | 83(61.9%) | |
| Midline shift | 0.848 | ||
| Presence | 18(11.9%) | 15(11.2%) | |
| Absence | 133(88.1%) | 119(88.8%) | |
| Hypertension | 0.724 | ||
| Presence | 48(31.8%) | 40(29.9%) | |
| Absence | 103(68.2%) | 94(70.1%) | |
| Smoking history | 0.718 | ||
| Presence | 19(12.6%) | 15(11.2%) | |
| Absence | 132(87.4%) | 119(88.8%) | |
| Cholesterol | 0.203 | ||
| >5.17mmol/L | 16(10.6%) | 21(15.7%) | |
| ≤5.17mmol/L | 135(89.4%) | 113(84.3%) | |
| Triglyceride | 0.747 | ||
| >1.70mmol/L | 48(31.8%) | 45(33.6%) | |
| ≤1.70mmol/L | 103(68.2%) | 89(66.4%) | |
| Outcome | 0.242 | ||
| Good outcomes | 54(35.8%) | 57(42.5%) | |
| Adverse outcomes | 97(64.2%) | 77(57.5%) |