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Table 1 Demographic and clinical characteristics of patients under study

From: Cost-utility analysis of total knee arthroplasty alone and in comparison with post-surgical rehabilitation and conservative treatment in the Republic of Kazakhstan

Variable

Type of intervention (n = 244)

Test of difference*

Conservative treatment, n = 122

TKA, n = 62

TKA with rehabilitation, n = 60

N

%

N

%

N

%

χ2

p-value

Sex

 Females

90

73.8

44

71.0

53

88.3

6.258

0.044

 Males

32

26.2

18

29.0

7

11.7

Age (mean ± SD), years*

65.05

3.19

64.66

3.01

66.95

2.77

10.394

0.000

Ethnicity

 Kazakhs

20

16.4

20

32.3

18

30.0

7.414

0.025

 Russians

102

83.6

42

67.7

42

70.0

Education

 Secondary

4

3.3

10

16.1

19

31.7

106.066

0.000

 Vocational secondary

20

16.4

22

35.5

41

68.3

 Higher

98

80.3

30

48.4

0

0.0

Monthly income

 Below the median range

78

63.9

30

48.4

0

0.0

67.212

0.000

 Above the median range

44

36.1

32

51.6

60

100.0

Duration of osteoarthritis (mean ± SD), years*

9.69

1.93

11.58

1.27

12.28

2.04

48.552

0.000

Disability

 Absent

48

39.3

50

80.6

17

28.3

39.424

0.000

 Present

74

60.7

12

19.4

43

71.7

Need for TKA revision

 Absent

50

100.0

23

62.2

22.547

0.000

 Present

0

0.0

14

37.8

  1. *ANOVA was test of difference for quantitative variables
  2. SD Standard deviation, TKA Total knee arthroplasty