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Table 2 Percentage of patients who reported the lowest and highest possible score, intraclass correlation coefficients for test-retest reliability for patients reporting no global change and Cronbach’s alpha for patient and staff responses at baseline

From: Validity and reliability of the English and translated Chinese versions of the Integrated Palliative care Outcome Scale (IPOS) in Singapore

 

Number of items

Mean (SD)

Descriptive statistics

Test-retest

Cronbach’s alpha

% with min score

% with max score

ICC

95% CI

Patient

Staff

English

 

N = 111

N = 111

N = 30

N = 111

N = 143

Total

17

17.77 (10.99)

1.80

0.00

0.80

0.67–0.93

0.88

0.84

 Physical

10

8.50 (6.95)

9.01

0.00

0.77

0.63–0.92

0.84

0.74

 Emotional

4

5.85 (3.96)

7.21

1.8

0.72

0.55–0.90

0.80

0.82

 Communication and Practical Issues

3

3.16 (2.31)

16.21

0.00

0.53

0.27–0.79

0.58

0.65

Chinese

 

N = 109

N = 109

N = 27

N = 109

Total

17

14.45 (10.10)

1.83

0.00

0.88

0.80–0.97

0.84

 Physical

10

7.87 (7.19)

13.76

0.00

0.93

0.87–0.98

0.82

 Emotional

4

4.52 (3.30)

11.01

0.00

0.80

0.66–0.94

0.68

 Communication and Practical Issues

3

2.87 (2.19)

18.34

0.00

0.45

0.15–0.76

0.29