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Table 1 Characteristics of the patients

From: Significance of prophylactic intra-abdominal drain placement after laparoscopic distal gastrectomy for gastric cancer

  

Drainage group

No-drainage group

 
  

( n= 45)

( n= 33)

p value

Male:female

 

28:17

23:10

0.493a

Age (years)

 

70.5 ± 13.4

74.8 ± 9.8

0.125b

BMI (kg/m2)

 

23.2 ± 4.0

23.2 ± 4.0

23.2 ± 4.0

Concurrent illness

    

None

 

7(15.6%)

7(21.2%)

0.520a

Arrhythmia

 

2(3.6%)

5(15.2%)

 

Ischemic heart disease

 

7(12.7%)

2(6.1%)

 

Hypertension

 

22(40.0%)

12(36.4%)

 

Diabetes mellitus

 

6(10.1%)

5(15.2%)

 

Cerebral infarction

 

4(7.3%)

4(12.1%)

 

COPD

 

9(16.4%)

6(18.2%)

 

Hyperlipidemia

 

9(16.4%)

3(9.1%)

 

Other

 

7(12.7%)

5(15.2%)

 

Location of tumor (M/L)

 

26/19

14/19

0.180a

Diameter of tumor (mm)

 

44.5 ± 31.6

39.0 ± 19.3

0.382b

Depth of tumor invasion

1a

11(24.4%)

5(15.2%)

0.177a

 

1b

13(28.9%)

12(36.4%)

 
 

2

6(13.3%)

8(24.2%)

 
 

3

10(22.2%)

2(6.1%)

 
 

4a

5(11.1%)

6(18.2%)

 

Lymph node metastasis

0

33(73.3%)

23(69.7%)

0.132a

 

1

2(4.4%)

6(18.2%)

 
 

2

5(11.1%)

1(3.0%)

 
 

3a

5(11.1%)

2(6.1%)

 
 

3b

0(0%)

1(3.0%)

 

Tumor stage

1a

24(53.3%)

14(42.4%)

0.245a

 

1b

4(8.9%)

9(27.3%)

 
 

2a

5(11.1%)

1(3.0%)

 
 

2b

2(4.4%)

4(12.1%)

 
 

3a

4(8.9%)

2(6.1%)

 
 

3b

4(8.9%)

2(6.1%)

 
 

3c

2(4.4%)

1(3.0%)

 
  1. BMI body mass index, COPD chronic obstructive pulmonary disease, M middle, L lower, a chi-square test, b Student’s t-test.