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Table 1 Demographics and patient characteristics

From: No difference in the functional improvements between unilateral and bilateral total knee replacements

  

Group 1

Group 2

p-value

  

(n = 93)

(n = 51)

 

Gender

Male

23 (24.7%)

5 (9.8%)

0.030

Female

70 (75.3%)

46 (90.2%)

 

Age (years)

 

70.4 ± 7.2

70.0 ± 6.2

0.707

BMI (kg/m2)

 

27.1 ± 3.5

27.4 ± 3.4

0.615

Education (years)

≤ 6

69 (74.2%)

44 (86.3%)

0.092

>  6

24 (25.8%)

7 (13.7%)

 

Income

Enough

86 (92.5%)

49 (96.1%)

0.393

Lacking

7 (7.5%)

2 (3.9%)

 

Current work status

Without

70 (75.3%)

39 (76.5%)

0.872

With

23 (24.7%)

12 (23.5%)

 

Other bone disease

Without

69 (74.2%)

37 (72.5%)

0.860

With

24 (25.8%)

14 (27.5%)

 

Low back pain

Without

44 (47.3%)

27 (52.9%)

0.518

With

49 (52.7%)

24 (47.1%)

 

CVD

Without

71 (76.3%)

45 (88.2%)

0.085

With

22 (23.7%)

6 (11.8%)

 

DM

Without

73 (78.5%)

40 (78.4%)

0.993

With

20 (21.5%)

11 (21.6%)

 

HTN

Without

41 (44.1%)

16 (31.4%)

0.136

With

52 (55.9%)

35 (68.6%)

 
  1. Group 1, unilateral TKR; Group 2, bilateral TKR; CVD, history of cardiovascular disease; DM, history of diabetes mellitus; HTN, history of hypertension
  2. Statistical significance was set at p < 0.0045, as described in the statistical analysis section