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Table 3 Reliability and "floor" and "ceiling" effects in comparable NHP and SF-36 scales before and one year after revascularization.

From: A comparison of the Nottingham Health Profile and Short Form 36 Health Survey in patients with chronic lower limb ischaemia in a longitudinal perspective

NHPa Before N = 90

% floor

% ceiling

Alphab values

SF-36 Before N = 90

% floor

% ceiling

Alphab values

Pain

5.6

3.3

0.71

Bodily pain

5.6

0

0.57

Physical mobility

0

1.1

0.69

Physical functioning

2.2

0

0.82

Emotional reactions

0

36.7

0.76

Mental health

1.1

3.3

0.76

Energy

27.8

29.9

0.71

Vitality

4.4

0

0.70

Social isolation

0

65.6

0.34

Social functioning

0

17.8

0.56

NHP a One year n = 66

% floor

% ceiling

Alphab values

SF-36 One year n = 66

% floor

% ceiling

Alphab values

Pain

1.5

13.6

0.76

Bodily pain

1.5

0

0.86

Physical mobility

1.5

13.6

0.76

Physical functioning

1.5

0

0.87

Emotional reactions

1.5

50.0

0.84

Mental health

0

7.6

0.87

Energy

19.7

42.4

0.73

Vitality

4.5

1.5

0.83

Social isolation

3.0

71.2

0.73

Social functioning

1.5

34.8

0.64

  1. a The NHP scores are reversed for consistency with the SF-36. b Cronbach's α