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Table 1 Patient and disease characteristics at baseline from the total group and the follow-up data from the reliability and the responsiveness sample*

From: The Dutch Lower Extremity Functional Scale was highly reliable, valid and responsive in individuals with hip/knee osteoarthritis: a validation study

N

Baseline sample

Reliability sample (≤3 weeks)

Responsiveness sample (≥3 months)

401

106

112

Age, mean (SD)

58 (13)

61 (11)

58 (11)

Female, ♀%

231 (58%)

65 (63%)

59 (54%)

Index joint, knee

284 (71%)

81 (76%)

81 (72%)

BMI, median (IQR)

26 (24-29)

26 (24-30)

27 (24-30)

Education, higher†

77 (20%)

25 (25%)

27 (25%)

Duration complaints, >5 years†

144 (61%)

72 (63%)

59 (58%)

Co-morbidities, yes

192 (52%)

52 (50%)

63 (72%)

 

Baseline data

Follow-up data

 

Hip group

Knee Group

Hip group

Knee Group

Hip group

Knee Group

N

117

284

25

81

31

81

LEFS

36.0 (16.6)

39.6 (14.1)

29.8 (13.5)

36.4 (13.7)

34.3 (17.0)

37.5 (15.0)

HOOS/KOOS

      

Pain, mean (SD)

44.6 (21.3)

49.9 (20.0)

41.7 (21.1)

46.5 (19.7)

43.6 (23.7)

53.8 (19.3)

Symptoms, mean (SD)

41.6 (21.4)

54.6 (19.3)

40.2 (20.3)

52.5 (20.5)

39.7 (23.5)

55.8 (19.6)

Function, daily living, mean (SD)

47.5 (21.9)

56.5 (21.7)

43.8 (21.0)

54.2 (20.3)

46.5 (24.0)

57.8 (21.4)

Function, sports and recreation, median (IQR)

25 (6-38)

10 (0-30)

13 (6-25)

5 (0-25)

19 (6-31)

10 (0-25)

Quality of life, median (IQR)

25 (13-38)

25 (13-44)

31 (19-38)

25 (13-38)

25 (13-38)

31 (19-44)

SF36

      

Pain, mean (SD)

35.6 (8.9)

37.3 (8.2)

35.6 (6.5)

38.6 (7.3)

37.0 (8.0)

39.9 (8.3)

Functioning, mean (SD)

31.8 (9.8)

32.8 (9.2)

29.8 (8.5)

32.5 (8.2)

31.0 (10.0)

33.4 (9.5)

HADS (total), median (IQR)

9 (5-16)

9 (4-15)

N/A

N/A

N/A

N/A

CIS, mean (SD)

34.8 (12.6)

31.0 (13.6)

N/A

N/A

N/A

N/A

  1. * Figures are numbers and percentages in the brackets unless indicated differently. †Cut-off arbitrarily chosen. Abbreviations: BMI = Body Mass Index, IQR = Inter Quartile Range, SD = Standard Deviation.