Table 3

Descriptive summary of distribution of QLACS summary and domain scores, possible floor and ceiling effects at FU1, test-retest correlation, and ICC between FU1 and FU2,

Domain/Subscale

N

Mean

STD

Min

% Floor

Max

% Ceiling

Test-retest Correlation

ICC


Generic

Negative Feelings

94

11.5

4.2

4

1.1

27

0

0.78

-

Positive Feelings

94

20.8

5.1

7

0

28

2.1

0.82

-

Cognitive Problems

94

10.6

4.3

4

5.3

24

0

0.75

-

Sexual Problems

91

13.7

6.6

4

6.4

28

2.1

0.89

-

Physical Pain

93

8.5

5.0

4

20.1

26

0

0.89

-

Fatigue

94

12.3

5.6

4

4.3

27

0

0.84

-

Social Avoidance

94

7.9

4.6

4

0

26

0

0.86

-

Summary**

93

75.5

26.3

49

0

167

0

0.91

0.95

Cancer-Specific

Appearance

94

8.2

4.9

4

29.8

24

0

0.83

-

Financial Problems

93

6.2

3.9

4

60.6

25

0

0.82

-

Distress – Recurrence

94

11.7

5.7

4

10.6

28

1.1

0.85

-

Distress – Family

94

10.9

6.7

4

17.0

28

2.1

0.88

-

Summary

94

37.0

15.7

16

2.13

90

0

0.89

0.98

Benefit of Cancer

94

17.6

6.2

4

2.13

28

4.3

0.82

-


N.B. – Missing percentage are low in general. The domain that contains most missing values is Sexual Problem, in which there are 3 missing values (3.2%). Lower scores equal better quality of life.

**The summary score is computed by added the domain scores except for positive feelings. The positive feelings score is subtracted from 32 and then added to the other domain scores.

Avis et al. Health and Quality of Life Outcomes 2006 4:92   doi:10.1186/1477-7525-4-92

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