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Table 2 Characteristics of patients with end-stage KOA (n = 421)

From: Clinical phenotypes of comorbidities in end-stage knee osteoarthritis: a cluster analysis

Characteristic

Total n = 421

Men n = 87

Women n = 334

P Value

Age (years)

67 ± 6

68 ± 7

67 ± 6

0.127

BMI (kg/m2)

25.3 ± 3.4

24.7 ± 3.5

25.5 ± 3.3

0.497

Waist circumference (cm)

89.5 ± 9.4

87.0 ± 10.4

90.6 ± 7.8

0.010

Side

 Single

147 (35)

32 (37)

115 (34)

0.682

 Double

274 (65)

55 (63)

219 (66)

Nature of pain

 Intermittent

365 (87)

74 (85)

291 (87)

0.000

 Constant

56 (13)

13(15)

43 (13)

 Symptom duration (years)

11.3 ± 7.3

9.9 ± 7.0

11.7 ± 7.3

0.211

Comorbidity

 Obesity

113 (27)

19 (22)

94 (28)

0.237

 Hypertension

220 (52)

36 (41)

184 (55)

0.023

 Diabetes

97 (23)

14 (16)

83 (25)

0.084

 Coronary heart disease

70 (17)

11 (13)

59 (18)

0.263

 Hyperuricemia

40 (10)

4 (5)

36 (11)

0.100*

 Stroke

43(10)

9(10)

34(10)

0.964

 Rheumatoid arthritis

25(6)

3(3)

22(7)

0.443*

 Chronic renal disease

4(1)

0(0)

4(1)

0.585*

 Liver disease

123(29)

20(23)

103(31)

0.152

 Sleep disorders

40(10)

30(34)

10 (3)

0.477

 Depression

143 (34)

19 (22)

124 (37)

0.007

 Anxiety

109 (26)

15 (17)

94 (28)

0.039

 Hyperlipidemia

59(14)

6(2)

53(61)

0.032

  1. Data are presented as mean ± standard deviation for continuous variables, and categorical variables are expressed as frequencies and percentages (%); Student t test was used for continuous variables and χ2 test was used for dichotomous variables. Two-tailed p values less than 0.05 were considered statistically significant
  2. *Fisher exact test