Table 1 Patient baseline characteristics.
Category | Training(n = 134) | Testing(n = 34) | Validation(n = 43) |  |  | |
|---|---|---|---|---|---|---|
IANR group | IANR ≥ 37(n = 107) | IANR<37(n = 27) | IANR ≥ 37(n = 27) | IANR<37(n = 7) | IANR ≥ 37(n = 31) | IANR<37(n = 12) |
Male/Female(n) | 89/18 | 22/5 | 9/18 | 3/4 | 7/24 | 3/9 |
Age(\(\:\stackrel{-}{x}\)±s, years) | 57.4 ± 11.0 | 65.0 ± 11.3 | 56.9 ± 11.4 | 70.4 ± 9.5 | 61.4 ± 12.0 | 56.7 ± 8.4 |
Smoking history(%) | 32(30.0) | 5(18.5) | 4(14.8) | 0(0) | 11(35.5) | 5(41.7) |
Drinking history(%) | 26(24.3) | 4(14.8) | 4(14.8) | 0(0) | 7(22.6) | 5(41.7) |
Hypertension(%) | 31(30.0) | 12(44.4) | 10(37.0) | 3(42.9) | 17(54.8) | 3(25.0) |
Diabetes(%) | 10(9.3) | 7(25.9) | 5(18.5) | 2(28.6) | 13(41.9) | 10(83.3) |
Cardiovascular disease(%) | 11(10.3) | 7(25.9) | 2(7.4) | 1(14.3) | 7(22.3) | 0(0) |
Traumatic brain injury(%) | 5(4.7) | 4(14.8) | 3(11.1) | 1(14.3) | 5(16.1) | 2(16.7) |
Injury site(%) | Â | Â | Â | Â | Â | Â |
C1-4 | 36(33.6) | 11(40.7) | 7(25.9) | 2(28.6) | 7(25.9) | 2(28.6) |
C5-T1 | 13(12.1) | 7(25.9) | 9(33.3) | 2(28.6) | 9(33.3) | 2(28.6) |
C1-T1 | 58(54.2) | 9(33.3) | 11(40.7) | 3(42.9) | 11(40.7) | 3(42.9) |
Treatment(%) | Â | Â | Â | Â | Â | Â |
Anterior approach | 36(33.6) | 4(14.8) | 9(33.9) | 3(42.9) | 10(32.3) | 5(41.7) |
Posterior approach | 42(39.3) | 16(59.3) | 13(48.1) | 4(57.1) | 21(67.7) | 7(58.3) |
Anterior&Posterior approach | 2(1.9) | 3(11.1) | 1(3.7) | 0(0) | 0(0) | 0(0) |
Conservative treatment | 27(25.2) | 4(14.8) | 4(14.8) | 0(0) | 0(0) | 0(0) |
