Table 1. Patient Characteristics.

Characteristics		All Patients (n = 364)	Patients with the Terminal Ileum Lying Across the Psoas Muscle					Patients with the Sigmoid Colon Lying Across the Psoas Muscle
			All Patients in the Group (n = 322)	Subcohort of Patients with Prior CTE (n = 164)	P *	Subcohort of Patients with Endoscopic Results (n = 252)	P *	All Patients in the Group (n = 363)	Subcohort of Patients with Prior CTE (n = 190)	P †
Age, year		31.2 ± 9.4	30.9 ± 9.5	32.4 ± 9.7	0.115	30.7 ± 9.4	0.776	31.2 ± 9.4	32.7 ± 9.5	0.079
Sex					0.456		0.767			0.408
	Male	269 (73.9)	238 (73.9)	116 (70.7)		189 (75.0)		268 (73.8)	134 (70.5)
	Female	95 (26.1)	84 (26.1)	48 (29.3)		63 (25.0)		95 (26.2)	56 (29.5)
Height, cm		169.5 ± 7.5	169.6 ± 7.5	168.6 ± 7.1	0.165	169.7 ± 7.5	0.850	169.5 ± 7.6	168.5 ± 7.2	0.116
Weight, kg		65.6 ± 13.3	65.7 ± 13.3	64.8 ± 12.3	0.445	66.5 ± 13.6	0.509	65.6 ± 13.3	64.6 ± 12.5	0.392
BMI, kg/m2		22.7 ± 3.7	22.7 ± 3.7	22.7 ± 3.4	0.865	23.0 ± 3.8	0.484	22.7 ± 3.7	22.6 ± 3.5	0.844
CDAI score					0.461		0.850			0.674
	< 150	319 (87.6)	283 (87.9)	146 (89.0)		223 (88.5)		318 (87.6)	169 (88.9)
	150–219	19 (5.2)	15 (4.7)	10 (6.1)		13 (5.2)		19 (5.2)	11 (5.8)
	220–450	26 (7.1)	24 (7.5)	8 (4.9)		16 (6.3)		26 (7.2)	10 (5.3)
	> 450	0 (0)	0 (0)	0 (0)		0 (0)		0 (0)	0 (0)

Data are expressed as mean ± standard deviation for continuous variables and as number (percentage) for categorical variables. Patient characteristics were compared using the independent t test or chi-square test, as appropriate, according to the data type. ^*For comparison with all 322 patients in the group, ^†For comparison with all 363 patients in the group. BMI = body mass index, CTE = computed tomography enterography, CDAI = Crohn's Disease Activity Index