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Table 2 Patient characteristics before and after PSM

From: Usefulness of the endoscopic surgical skill qualification system in laparoscopic colorectal surgery: short-term outcomes: a single-center and retrospective analysis

Before PSM

QS

n?=?170

NQS

n?=?50

p value

After PSM

QS

n?=?43

NQS

n?=?43

p value

Mean age (years)

68.49

66.3

0.2273

 

65.65

65.19

0.8589

Gender female

44.71% (n?=?76)

38%(n?=?19)

0.4001

 

39.53% (n?=?17)

39.53% (n?=?17)

1

Mean BMI (Kg/m2)

22.21

22.01

0.694

 

21.65

22.37

0.293

ASA

  

0.292

   

0.8204

Class I

7.65% (n?=?13)

14% (n?=?7)

0.1696

 

11.63% (n?=?5)

16.28% (n?=?7)

0.5337

Class II

72.35% (n?=?123)

72% (n?=?36)

0.9609

 

76.74% (n?=?33)

72.09% (n?=?31)

0.6211

Class III

20% (n?=?34)

14% (n?=?7)

0.3382

 

11.63% (n?=?5)

11.63% (n?=?5)

1

History of abdominal surgery +

32.94% (n?=?56)

42% (n?=?21)

0.2378

 

32.56% (n?=?14)

34.88% (n?=?15)

0.8196

Stage

  

0.6068

   

0.5808

0

3.53% (n?=?6)

4% (n?=?2)

0.8758

 

4.65% (n?=?2)

4.65% (n?=?2)

1

I

28.24 (n?=?48)

30% (n?=?15)

0.8083

 

37.21% (n?=?16)

25.58% (n?=?11)

0.2453

II

31.18% (n?=?53)

22% (n?=?11)

0.2092

 

18.6% (n?=?8)

20.93% (n?=?9)

0.7866

IIIa

16.47% (n?=?28)

26% (n?=?13)

0.1282

 

13.95% (n?=?6)

27.91% (n?=?12)

0.1117

IIIb

9.41% (n?=?16)

6% (n?=?3)

0.4571

 

4.65% (n?=?2)

6.98% (n?=?3)

0.7142

IV

11.18% (n?=?19)

12% (n?=?6)

0.8719

 

20.93% (n?=?9)

13.95% (n?=?6)

0.3939

Anastomosis

  

0.0002*

   

0.7737

FEEA

56.47% (n?=?96)

36% (n?=?18)

0.0109*

 

44.19% (n?=?19)

41.86% (n?=?18)

0.8276

DST

40.59% (n?=?69)

50% (n?=?25)

0.237

 

51.16% (n?=?22)

55.81% (n?=?24)

0.6656

handsewn

0.59% (n?=?1)

12% (n?=?1)

0.0001*

 

2.33% (n?=?1)

0% (n?=?0)

0.3145

none

2.35% (n?=?4)

2% (n?=?1)

0.883

 

2.33% (n?=?1)

2.33% (n?=?1)

1

Tumor size (mm)

35.51

37.34

0.5781

 

36.28

36.79

0.9043

Location

  

0.0945

   

0.8245

colon

77.65% (n?=?132)

66% (n?=?33)

0.0945

 

60.47% (n?=?26)

62.79% (n?=?27)

0.8245

rectum

22.35% (n?=?38)

34% (n?=?17)

0.0945

 

39.53% (n?=?17)

37.21% (n?=?16)

0.8245

Operation

  

0.83

   

0.712

LAAPR

1.18% (n?=?2)

2% (n?=?1)

0.6589

 

2.33% (n?=?1)

2.33% (n?=?1)

1

LAAR

11.76% (n?=?20)

18% (n?=?9)

0.2519

 

20.93% (n?=?9)

20.93% (n?=?9)

1

LACAR

1.18% (n?=?2)

0% (n?=?0)

0.441

 

2.33% (n?=?1)

0% (n?=?0)

0.3145

LACDR

1.18% (n?=?2)

2% (n?=?1)

0.6589

 

2.33% (n?=?1)

0% (n?=?0)

0.3145

LACSR

22.35% (n?=?38)

20% (n?=?10)

0.7233

 

11.63% (n?=?5)

16.28% (n?=?7)

0.5337

LACTR

7.65% (n?=?13)

4% (n?=?2)

0.3685

 

9.3% (n?=?4)

2.33% (n?=?1)

0.1668

LA Hartmann’ operation

1.18% (n?=?2)

0% (n?=?0)

0.441

 

0% (n?=?0)

0% (n?=?0)

1

LAICR

12.35% (n?=?21)

8% (n?=?4)

0.3939

 

11.63% (n?=?5)

9.3% (n?=?4)

0.7246

LALAR

12.94% (n?=?22)

18% (n?=?9)

0.3661

 

23.26% (n?=?10)

18.6% (n?=?8)

0.596

LALt.hemi.CR

6.47% (n?=?11)

10% (n?=?5)

0.5936

 

4.65% (n?=?2)

9.3% (n?=?4)

0.3972

LARt.hemi.CR

21.76% (n?=?37)

18% (n?=?9)

0.4571

 

11.63% (n?=?5)

20.93% (n?=?9)

0.2427

  1. *P < 0.05