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Table 5 Measures of item difficulty and fit from Rasch analysis of each of the QOLIBRI scales

From: The Norwegian version of the QOLIBRI – a study of metric properties based on a 12 month follow-up of persons with traumatic brain injury

Item

Content

Location

SE

Standardized residual

χ2

Prob.

Cognition

I 1

Concentrate

0.76

0.10

−1.01

2.33

0.31

I 2

Express yourself

−0.67

0.11

−1.27

1.79

0.41

I 3

Remember

0.95

0.10

2.36

1.58

0.45

I4

Plan and solve problems

−0.29

0.11

−0.15

0.76

0.69

I5

Decisions

−0.37

0.11

0.33

2.62

0.27

I6

Find a way about

−0.63

0.11

1.61

4.38

0.11

I7

Speed of thinking

0.24

0.11

−1.91

3.59

0.16

Self

I1

Energy

0.54

0.10

1.14

1.81

0.41

I2

Motivation

0.18

0.10

−0.10

0.36

0.83

I3

Self-esteem

0.04

0.10

−1.23

3.15

0.21

I4

Way of look

0.26

0.10

1.69

1.79

0.41

I5

Achievements

0.37

0.10

1.21

5.38

0.07

I6

Self-perception

−0.28

0.11

−1.81

5.04

0.08

I7

Own future

0.16

0.10

−0.58

3.67

0.16

Daily life and Autonomy

I1

Independence

−0.18

0.09

−0.93

2.28

0.32

I2

Get out and about

−0.11

0.13

−0.66

3.22

0.20

I3

Domestic activities

−0.42

0.10

0.17

1.95

0.38

I4

Run personal finances

−0.19

0.09

2.27

2.61

0.27

I5

Participation in work/education

−0.80

0.10

1.01

0.81

0.67

I6

Social and leisure activities

−0.22

0.09

1.88

2.74

0.25

I7

In charge own of life

−0.13

0.10

−3.05

6.51

0.04

Social Relationships

I1

Affection to others

−0.33

0.09

0.34

5.49

0.06

I2

Family members

−0.73

0.10

−0.04

1.46

0.48

I3

Friends

−0.53

0.10

−0.98

8.25

0.02

I4

Partner

0.55

0.09

−0.74

0.82

0.66

I5

Sex life

1.15

0.10

2.12

3.31

0.19

I6

Attitudes of others

−0.12

0.10

0.62

1.26

0.53

Emotions

I1

Loneliness

−0.20

0.10

−0.23

3.23

0.20

I2

Boring

0.34

0.10

0.72

0.64

0.73

I3

Anxiety

0.38

0.11

−0.57

4.82

0.09

I4

Depression

−0.85

0.17

−2.28

15.11

0.0005

I5

Anger

0.34

0.09

2.26

1.93

0.38

Physical Problems

I1

Slowness/clumsy

−0.19

0.13

1.16

0.12

0.94

I2

Other injuries

0.37

0.12

0.20

1.00

0.60

I3

Pain

0.22

0.12

1.03

0.13

0.93

I4

See/hear

−0.34

0.12

1.02

0.15

0.93

I5

TBI effects

−0.07

0.09

−2.07

6.65

0.04

  1. Bonferroni corrected significance level (0.05/number of items in the subscale)
  2. SE standard error