The ratio of superior mesenteric artery diameter to superior mesenteric vein diameter based on non-enhanced computed tomography in the early diagnosis of spontaneous isolated superior mesenteric artery dissection

Yuan-li Lei, Wen-xing Song, Yi Lin, Hui-ping Li, He-ping Lyu, Jiao-zhen Chen, Zhang-ping Li, Jia-na Yin, Ji-ke Xue, Shou-quan Chen

Table 1. Comparison of basic information of the enrolled patients

Variables Total patients (n=291) SISMAD group (n=97) Control group (n=194) t/χ2/Z P-value Age, years 52.03±7.39 52.03±7.42 52.03±7.40 0.000 1.000 Male 261 (89.7) 97 (89.7) 174 (89.7) 0.000 1.000 Hypertension 78 (26.8) 37 (38.1) 41 (21.1) 9.537 0.002 Diabetes mellitus 22 (7.6) 0 (0) 22 (14.7) 11.900 0.001 Liver-relative disease 45 (15.5) 13 (28.9) 32 (16.5) 0.473 0.492 Malignancy 47 (16.2) 5 (5.2) 42 (21.6) 12.992 <0.001 Digestive system malignancy 37 (12.7) 1 (1.0) 36 (18.6) 17.897 <0.001 Heart disease 9 (3.1) 0 (0) 9 (4.6) 3.225 0.073 Arrhythmia 9 (3.1) 4 (4.1) 5 (2.6) 0.129 0.719 Duration of abdominal pain, d 1.0 (0.4-3.0) 1.0 (0.3-3.0) 0.5 (1.0-3.0) -1.176 0.239