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Table 2 Dimensions’ characteristics of CargoQoL

From: Validation of the American version of the CareGiver Oncology Quality of Life (CarGOQoL) questionnaire

Dimension (Items)

N

Mean ± SDa

IIC min - max

IDV min - max

% floor effect

% ceiling effect

Alpha

INFIT min-max

Psychological well being (4)

85

47,7 ± 22,0

0.67–0.78

−0.16–0.64

0

2.6

0.87

0.78–1.28

Burden (4)

85

83,8 ± 18,7

0.23–0.82

−0.13–0.55

0

29.5

0.79

0.73–2.06

Relationship with healthcare (3)

85

74,1 ± 17,0

0.19–0.42

−0.18–0.38

0

10.3

0.57

0.62–1.38

Administration and finances (3)

83

80,8 ± 20,5

0.42–0.60

−0.11–0.48

0

30.8

0.71

0.77–1.23

Coping (3)

84

68,3 ± 20,2

0.37–0.51

−0.11–0.55

0

11.5

0.64

0.84–1.22

Physical well being (4)

84

69,4 ± 21,0

0.56–0.68

−0.21–0.67

0

6.4

0.81

0.79–1.24

Self-esteem (2)

85

74,1 ± 20,7

0.62–0.62

−0.15–0.22

0

20.5

0.75

0.97–1.13

Leisure time (2)

85

54,8 ± 20,3

0.45–0.45

−0.14–0.48

0

1.3

0.60

0.89–0.99

Social support (2)

85

72,7 ± 22,0

0.61–0.61

0.04–0.33

0

25.6

0.76

0.95–1.02

Private life (2)

80

50,6 ± 22,8

0.15–0.15

−0.17–0.47

1.3

5.1

0.26

0.97–1.04

Index

78

67,6 ± 11,8

      
  1. M ± SD mean ± standard deviation; ICC item internal consistency; IDV item discriminant validity; Alpha Cronbach’s alpha; INFIT Rasch statistics
  2. a scores ranging from 0 to 100; the higher the score, the better the QoL