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Table 2 Means, standard deviations, intraclass correlation coefficients and reliability estimates (ω) for the baseline (standard) and daily administrations of the SF-36

From: Detecting short-term change and variation in health-related quality of life: within- and between-person factor structure of the SF-36 health survey

 

Baseline SF-36

Daily SF-36

Variable

Mean

SD

Omega (BP)

Mean

SD

ICC

Omega (BP)

Omega (WP)

Physical functioning

81.4

21.7

.92

84.3

22.8

.89

.96

.70

 Vigorous

42.8

38.4

 

58.0

41.0

.81

  

 Moderate

82.0

31.9

 

83.4

31.6

.83

  

 Climb several

75.4

35.7

 

80.4

34.5

.82

  

 Climb one

92.0

22.0

 

92.8

22.3

.68

  

 Bending

75.8

31.1

 

81.0

31.2

.81

  

 Walk mile

81.8

33.4

 

80.5

35.3

.84

  

 Walk several blocks

88.1

27.7

 

87.8

28.4

.81

  

 Walk one block

96.1

15.0

 

95.1

18.9

.73

  

 Bathing

98.0

11.8

 

97.7

12.6

.52

  

Role physical

78.6

35.7

.84

84.0

32.1

.62

.96

.68

 Cut down

58.4

35.3

 

87.6

32.9

.52

  

 Accomplished

74.6

43.6

 

82

38.5

.51

  

 Limited

77.0

42.1

 

82.5

38.0

.62

  

Role emotional

84.7

29.7

.81

93.7

20.1

.38

.90

.73

 Cut down

88.7

31.7

 

95.0

21.8

.32

  

 Accomplished

77.9

41.5

 

89.6

30.6

.34

  

 Not careful

87.5

33.1

 

96.6

18.1

.36

  

Vitality

65.1

17.3

.82

68.1

21.7

.73

.95

.74

 Pep

60.2

21.4

 

59.7

25.9

.70

  

 Energy

59.5

22.9

 

61.1

26.0

.65

  

 Worn-out

76.8

21.7

 

81.7

23.7

.66

  

 Tired

64.2

20.0

 

69.9

23.6

.58

  

Mental health

80.0

13.4

.76

86.2

12.6

.56

.90

.60

 Nervous

84.1

21.6

 

92.9

17.1

.44

  

 Dumps

93.1

15.2

 

96.7

13.7

.31

  

 Calm

63.9

18.5

 

70.7

22.4

.52

  

 Blue

85.1

18.7

 

93.8

15.6

.35

  

 Happy

73.4

16.0

 

76.7

19.7

.50

  

Social functioning

87.9

19.2

a

91.6

18.7

.57

a

a

 Extent

88.9

18.9

 

92.4

18.4

.52

  

 Time

86.9

21.4

 

90.9

22.4

.48

  

Bodily pain

73.5

23.1

a

80.4

22.7

.81

a

a

 Magnitude

84.7

21.0

 

72.5

27.4

.80

  

 Interfere

61.7

28.5

 

88.3

20.9

.74

  

General health

67.3

16.2

.81

64.2

13.9

.41

a

a

 In general/Today

70.2

21.4

 

73.3

21.1

.73

  

 Last year/Yesterday

52.5

17.6

 

55.0

15.9

.09

  

 Easier

84.6

22.6

 

-

-

-

  

 Healthy

74.0

27.2

 

-

-

-

  

 Worse

51.8

28.2

 

-

-

-

  

 Excellent

71.5

26.3

 

-

-

-

  
  1. Note. ICC intraclass correlation coefficient, WP within-person, BP between-person
  2. aReliability could not be computed due to insufficient number of items for the subscale