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Table 5 Difference in performance test findings and self-reported knee pain and function among those with positive and negative special examination results

From: Physical examination findings and their relationship with performance-based function in adults with knee osteoarthritis

 

WOMAC paina

WOMAC functiona

20 m walkb

6 min walkc

Berg Balanced

Timed chair stande

Special Tests

Mean diff (95 % CI)

t-stat

Mean diff (95 % CI)

t-stat

Mean diff (95 % CI)

t-stat

Mean diff (95 % CI)

t-stat

Mean diff (95 % CI)

t-stat

Mean diff (95 % CI)

t-stat

Ely’s

+ = 79

- = 8

−52 (−135, 31)

−1.3

−247 (−535, 42)

−1.7

0 (−3, 2)

−0.3

41 (−24, 106)

1.2

−1 (−4, 2)

−0.7

+ Ely’s =29 –Ely’s =41.6 median

N/A

Lachman’s

+ = 9

- = 77

−26 −106, 53

−0.7

31 (−248, 311)

0.2

0 (−4,1)

−1.0

26 (−36, 88)

0.8

0 (−2, 3)

0.3

−5 (−12, 3)

−1.3

McMurray's

+ = 29

- = 57

32 (−21, 84)

1.2

158 (−24, 340)

1.7

−1 (−2, 1)

−0.6

−6 (−45, 33)

−0.3

−1 (−2, 1)

−0.6

−1 (−7, 4)

−0.5

Waldron

+ = 65

- = 22

−28 (−84, 29)

−1.0

−43 (−242, 155)

−0.4

−1 (−3, 1)

−1.3

23 (−19, 65)

1.1

0 (−2, 2)

0.3

−1 (−7, 5)

−0.3

Apley's (compression)

+ = 15

- = 70

29 (−36, 93)

0.9

113 (−111, 337)

1.0

−1 (−3, 1)

−1.2

36 (−9, 81)

1.6

1 (−2, 3)

0.7

−8 (−14, −1)

−2.3

Apley's (distraction)

+ =5

- = 80

103 (1, 205)

2.0

498 (150, 844)

2.9

3 (−1, 6)

1.6

−58 (−131, 14)

−1.6

−1 (−4, 3)

−0.3

8 (−4, 19)

1.3

Grind

+ = 49

- = 38

15 (−34, 65)

0.6

78 (−95, 250)

0.9

−1 (−2, 1)

−1.1

16 (−21, 52)

0.9

2 (0, 3)

1.7

−2 (−7, 3)

−0.8

Ober

+ = 29

- = 56

−49 (−98, 1)

−2.0

−163 (−340, 14)

−1.8

1 (−1, 2)

0.7

−22 (−61, 18)

−1.1

−1 (−3, 1)

−1.2

0 (−6, 5)

−0.1

  1. + number of positive test, − Number of negative test. CI confidence interval. Significant association (P < 0.05) in bold
  2. aWOMAC = Western Ontario and McMaster Index
  3. b20 m walk test is the total time it takes to walk 20 m
  4. cThe 6-min walk test measures the distance covered during the 6-min walk
  5. dThe Berg Balance Scale assessed balance during performance of 14 functional tasks
  6. eThe test measures the time taken to complete 10 full stands from a sitting position as fast as possible. Median values used to test Ely’s versus Timed Chair Stand