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Table 1 Demographics and comorbidity profile of the patients

From: The influence of previous arthroscopic treatment on subsequent primary total knee arthroplasty: the comparison between bilateral knees of the same patient

 

Experimental group

Control group

P

Age (years)

62.89 ± 6.30 (46–73)

63.06 ± 6.27 (47–74)

0.160

Gender (male/female)

7/49

7/49

BMI (kg/m2)

27.96 ± 2.97 (21.48–35.54)

27.79 ± 3.01 (22.03–35.54)

0.541

ASA

  

0.813

 1

1

1

 

 2

29

28

 

 3

26

27

 

Anesthesia

  

0.810

 General anesthesia

31

32

 

 Non-general anesthesia

25

24

 

Comorbidity

 Hypertension

22

22

1.000

 Coronary heart disease

8

8

1.000

 Diabetes

14

14

1.000

 Cerebral infarction

1

1

1.000

 Respiratory system

6

6

1.000

 Digestive system

2

2

1.000

 Urinary system

1

1

1.000

K-L grading

 III

18

25

0.174

 IV

38

31

0.174