Table 1. Variables for all patients included in a study of risk factors for failure of stent placement for anastomotic leakage.

Variables	Stent and recovery, n = 29 (63 %)	Stent and failure, n = 17 (37 %)	Unadjusted odds ratio	95 % CI		P value	Adjusted odds ratio1	95 % CI		P value
				Lower	Upper			Lower	Upper
Age, median (IQR), y	63 (39 – 77)	65 (52 – 78)	1.023	0.954	1.097	0.528
Sex ratio, M:F	27:2	14:3	0.346	0.052	3.316	0.343
ASA score, median (IQR)	2 (1 – 3)	2 (1 – 2)	0.710	0.319	1.578	0.400
BMI, median (IQR) (n = 31)	28 (25 – 30)	25 (21 – 28)	0.887	0.753	1.044	0.150
Smoker, n (%)	10 (34)	11 (65)	3.483	0.993	12.223	0.051	2.146	0.244	18.887	0.492
T stage, n (%) (n = 41)			1.422	0.616	3.284	0.410
T1 – 2	12 (46)	4 (26)
T3 – 4	14 (54)	11 (74)
Neoadjuvant therapy, n (%) (n = 42)	12 (44)	6 (40)	0.833	0.231	3.003	0.780
Resection type, n (%)			0.684	0.174	2.689	0.586
Esophagectomy	20 (69)	13 (77)
Total gastrectomy	9 (31)	4 (24)
Reconstruction type, n (%)			0.684	0.174	2.689	0.586
Esophagogastrostomy	20 (69)	13 (77)
Esophagojejunostomy	9 (31)	4 (24)
Level of anastomosis, n (%)
Neck	7 (24)	7 (41)
Mediastinum	13 (45)	6 (36)	0.462	0.111	1.921	0.288
Abdomen	9 (31)	4 (24)	0.444	0.092	2.150	0.313
CRP, median (IQR), mg/L (n = 42)	221 (131 – 307)	275 (227 – 333)	1.006	0.999	1.013	0.104
Time between surgery and insertion of stent, median (IQR), days	10 (8 – 15)	10 (5 – 17)	0.984	0.910	1.064	0.684
Persistent leakage after primary stent, n (%)2	6 (21)	9 (53)	12.000	1.990	72.352	0.007	11.570	1.032	129.712	0.047
Endoscopic reinterventions, n (%)	15 (52)	10 (59)	1.333	0.398	4.470	0.641

CI, confidence interval; ASA, American Society of Anesthesiologists; BMI, body mass index; CRP, C-reactive protein.

¹Adjusted for age, smoking, and CRP level at baseline.

²Confirmed with computed tomography after stent placement.