Table 3 The relationship between LCA and IMV position relationship at IMA root level and the clinical characteristics of the subjects
|  | Type A adjacent type (n = 160) | Type B distant type (n = 47) | t/χ2 | P |
|---|---|---|---|---|
Gender | 0.395 | 0.53 | ||
 Male, n (%) | 90 (56.3%) | 24 (51.1%) |  |  |
 Female, n (%) | 70 (43.7%) | 23 (48.9%) |  |  |
Age, mean ± SD (years) | 59.38 ± 13.30 | 59.59 ± 14.12 | − 0.093 | 0.926 |
Height, mean ± SD (cm) | 165.72 ± 8.02 | 165.23 ± 7.14 | 0.378 | 0.706 |
Body mass, mean ± SD (kg) | 67.61 ± 12.37 | 68.86 ± 16.24 | -0.564 | 0.573 |
Body mass index, mean ± SD (kg/m2) | 24.51 ± 3.43 | 25.19 ± 5.78 | − 1.008 | 0.314 |
DIMA-AB, mean ± SD (mm) | 41.06 ± 6.76 | 43.48 ± 6.56 | − 2.162 | 0.032 |
DIMA, mean ± SD (mm) | 99.25 ± 13.29 | 101.12 ± 13.09 | − 0.852 | 0.395 |
DIMA-SMA, mean ± SD (mm) | 73.58 ± 9.84 | 70.19 ± 9.24 | 2.107 | 0.036 |
dIMA, mean ± SD (mm) | 36.88 ± 9.93 | 43.54 ± 8.59 | − 4.164 | 0.000 |
IMA type | 0.398 | 0.819 | ||
 Type I | 90 (56.3%) | 24 (51.1%) |  |  |
 Type II | 37 (23.1%) | 12 (25.5%) |  |  |
 Type III | 33 (20.6%) | 11 (23.4%) |  |  |