Evaluation of characteristics of left-sided colorectal perfusion in elderly patients by angiography

Table 2 Univariate and multivariate analyses of inferior mesenteric artery hemoperfusion region with clinical features

	ATC	ASF	Univariate analysis		Multivariate analysis
	n = 104	n = 50	t / 2 value	P value	95%CI	OR	P value
Age, mean ± SD, yr	71.92 ± 5.41	73.8 ± 5.57	0.35	0.73	-
Gender, male vs female, ratio	1.36	2.12	1.51	0.219	-
BMI, mean ± SD, kg/m2	23.17 ± 3.19	24.15 ± 3.55	1.73	0.09	-
Comorbidity of atherosclerosis, n (%)	22 (21.2)	18 (36)	3.87	0.049	0.331-5.980	1.407	0.643
Comorbidity of diabetes, n (%)	8 (7.7)	6 (12)	0.76	0.384	-
IMA diameter, mean ± SD, mm	3.40 ± 0.57	3.35 ± 0.46	-0.51	0.61	-
IMA lesion, n (%)	13 (12.5)	12 (24)	3.28	0.036	0.228-7.553	1.314	0.76
Type IV of IMA pattern, n (%)	2 (1.9)	4 (8)	3.93	0.051	0.001-1.051	0.038	0.054
Impaired integrity of marginal artery, n (%)	28 (26.9)	46 (92)	57.29	< 0.001	0.001-0.029	0.006	< 0.001
Existence of aLCA and arc of Riolan	36 (34.6)	2 (4)	17.03	< 0.001	14.823-457.702	82.368	< 0.001

ASF: Inferior mesenteric artery perfuse only achieves splenic flexure or lower; ATC: Inferior mesenteric artery perfusion achieves to the transverse colon; aLCA: Ascending left colic artery.