Table 4 The results of univariate analysis.

From: Predictors of health-related quality of life after total knee arthroplasty: a case–control study

Variable

501 patients underwent TKA

Mean total SF-36

P value

Age (year)

< 40

40–60

> 60

67.24 ± 19.25

66.58 ± 20.33

59.25 ± 18.66

0.048

Gender

Female

Male

58.12 ± 17.25

70.25 ± 12.33

0.035

BMI (kg/m2)

20–25

25.1–30

> 30

78.24 ± 12.63

63.99 ± 11.58

52.33 ± 20.36

0.001

Educational level

< diploma

≥ diploma

59.19 ± 20.35

74.36 ± 16.31

0.023

Smoker

Positive

Negative

62.55 ± 21.56

65.61 ± 20.54

0.17

Number of comorbidities

< 2

> 2

60.65 ± 19.8

73.51 ± 20.5

0.036

Complication

No

Yes

62.35 ± 20.32

80.25 ± 12.52

0.001

Compliance with physiotherapy

No

Yes

59.34 ± 18.6

78.25 ± 19.1

0.001

TKA side

Uni lateral

Bilateral

80.22 ± 18.55

54.22 ± 22.3

0.001