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Table 1 The baseline characteristics of studied groups

From: Comparative study of self-expanding metal stent and intraluminal radioactive stent for inoperable esophageal squamous cell carcinoma

Characteristics Group A (n = 91) Group B (n = 40) P
Gender, n (%)    0.869c
 Male 67 (73.6 %) 30 (75 %)  
 Female 24 (26.4 %) 10 (25 %)  
Age (years, mean ± SD) (range) 66.3 ± 9.4 (43–90) 66.9 ± 8.6 (47–84) 0.700d
Location of cancer, n (%)    0.195c
 Proximal third 15 (16.5 %) 3 (7.5 %)  
 Middle third 66 (72.5 %) 29 (72.5 %)  
 Distal third 10 (11.0 %) 8 (20.0 %)  
Complications before stent placement, n (%)    0.601c
 Yes 41 (46.1 %) 20 (50 %)  
 No 50 (55.9 %) 20 (50 %)  
Local lymph node enlargement, n (%)a    0.686c
 Yes 69 (75.8 %) 29 (72.5 %)  
 No 22 (24.2 %) 11 (27.5 %)  
Tumor stage, n (%)b    0.437c
 III 61 (67.0 %) 24 (60.0 %)  
 IV 30 (33.0 %) 16 (40.0 %)  
Time of stent placement (min, mean ± SD) (range) 22.6 ± 4.9 (15–35) 20.2 ± 4.7 (14–32) 0.792d
Length of tumor (cm, mean ± SD) (range) 5.3 ± 1.3 (3–10) 5.5 ± 1.5 (2.5–8) 0.139d
Length of stent (cm, mean ± SD) (range) 9.3 ± 2.0 (6–16) 10.5 ± 1.6 (6–14) 0.274d
Esophagus dilation, n (%)    0.775c
 Yes 57 (62.6 %) 24 (60 %)  
 No 34 (37.4 %) 16 (40 %)  
  1. aShort diameter of lymph node ≥8 mm in cervical region, mediastinum, abdomen
  2. b7th edition of the AJCC&UICC
  3. c χ 2 exact test was used
  4. dStudent’s t test was used