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Table 4 Floor and ceiling effects for SF-36 subscale scores for the study groups at first and final follow-up*

From: Magnitude and meaningfulness of change in SF-36 scores in four types of orthopedic surgery

SF-36 scores

Total hip

replacement

(controls)

Total hip

replacement

(patients)

Total knee

replacement

Arthroscopic

partial

meniscectomy

Anterior cruciate

ligament

reconstruction

  

%

scoring

0

%

scoring

100

%

scoring

0

%

scoring

100

%

scoring

0

%

scoring

100

%

scoring

0

%

scoring

100

%

scoring

0

%

scoring

100

PF

Baseline

-

12.0

8.3

-

1.4

-

1.6

0.0

2.2

-

 

First follow-up

-

13.6

1.3

0.7

-

1.4

-

6.3

-

4.3

 

Final follow-up

2.2

8.7

3.9

-

2.7

-

  

-

28.3

RP

Baseline

19.6

54.3

80.8

2.0

70.4

2.8

39.7

19.0

76.1

-

 

First follow-up

21.4

61.9

35.3

31.7

40.8

26.8

20.6

50.8

19.6

45.7

 

Final follow-up

26.2

42.9

35.3

35.3

38.0

19.4

  

10.9

71.7

BP

Baseline

-

40.0

9.0

1.3

8.3

1.4

-

1.6

-

2.2

 

First follow-up

-

36.0

0.6

27.1

-

26.4

-

12.7

-

21.7

 

Final follow-up

2.0

38.0

0.6

25.8

-

19.4

  

2.2

41.3

GH

Baseline

-

8.7

-

4.3

-

1.5

-

16.1

-

8.7

 

First follow-up

-

13.0

0.7

5.7

-

8.8

-

27.4

-

13.0

 

Final follow-up

-

6.5

1.4

4.3

-

8.8

  

-

21.7

VT

Baseline

-

4.4

2.2

0.7

3.0

4.5

-

3.2

-

-

 

First follow-up

-

11.1

0.7

5.1

-

7.6

-

7.9

-

13.0

 

Final follow-up

2.2

4.4

0.7

4.4

3.0

4.5

  

-

6.5

SF

Baseline

-

64.0

3.2

17.7

-

22.5

-

52.4

2.2

32.6

 

First follow-up

-

53.1

0.6

60.8

-

57.7

-

68.3

-

67.4

 

Final follow-up

2.0

52.0

1.9

55.7

2.8

53.5

  

-

84.8

RE

Baseline

10.8

59.5

47.5

30.2

46.9

28.1

14.3

54.0

30.4

41.3

 

First follow-up

13.5

67.6

17.3

55.4

28.1

53.1

12.7

68.3

15.2

76.1

 

Final follow-up

18.9

75.7

23.0

54.0

26.6

43.8

  

-

84.8

MH

Baseline

-

20.0

-

6.6

-

12.1

-

9.5

-

-

 

First follow-up

-

15.6

0.7

24.1

-

21.2

-

22.2

-

21.7

 

Final follow-up

-

13.3

-

19.0

-

16.7

  

-

15.2

  1. *Note: First follow-up was three months for APM and six months for THR, TKR, and ACL groups; Final follow-up was five years for THR and TKR groups and two years for ACL.
  2. PF = Physical Functioning, RP = Role Physical, BP = Bodily Pain, GH = General Health, VT = Vitality, SF = Social Functioning, RE = Role Emotional, MH = Mental Health.
  3. Values indicating floor (15% or more with a score of 0) and ceiling (15% or more with a score of 100) effects are bolded.