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Table 5 Construct validity correlations between NASH-CHECK and the supporting PRO measures at baseline

From: Validation of NASH-CHECK: a novel patient-reported outcome measure for nonalcoholic steatohepatitis

NASH-CHECK

scale score

Correlation coefficient a

Itch VAS

Sleep VAS

PGIS

CLDQ fatigue

CLDQ activity

CLDQ emotional function

CLDQ abdominal symptoms

CLDQ systemic symptoms

CLDQ worry

CLDQ total

EQ VAS

Abdominal Pain

0.25

0.28

0.55

 − 0.41

 − 0.37

 − 0.37

 − 0.60

 − 0.44

 − 0.26

 − 0.49

 − 0.16

Abdominal Bloating

0.19

0.26

0.62

 − 0.58

 − 0.55

 − 0.50

 − 0.74

 − 0.59

 − 0.28

 − 0.65

 − 0.27

Fatigue

0.15

0.23

0.65

 − 0.75

 − 0.48

 − 0.59

 − 0.55

 − 0.59

 − 0.39

 − 0.67

 − 0.38

Sleep

0.20

0.51

0.52

 − 0.50

 − 0.38

 − 0.65

 − 0.41

 − 0.47

 − 0.33

 − 0.54

 − 0.29

Itchy Skin

0.63

0.47

0.48

 − 0.35

 − 0.30

 − 0.39

 − 0.39

 − 0.51

 − 0.23

 − 0.43

 − 0.21

Cognitive Symptoms

0.20

0.29

0.61

 − 0.71

 − 0.54

 − 0.66

 − 0.58

 − 0.61

 − 0.31

 − 0.68

 − 0.39

Activity Limitations

0.07

0.29

0.48

 − 0.64

 − 0.66

 − 0.60

 − 0.55

 − 0.68

 − 0.39

 − 0.70

 − 0.49

Emotional Impact

0.10

0.17

0.34

 − 0.48

 − 0.44

 − 0.56

 − 0.43

 − 0.46

 − 0.74

 − 0.62

 − 0.36

Social Impact

0.14

0.28

0.43

 − 0.58

 − 0.49

 − 0.59

 − 0.42

 − 0.55

 − 0.52

 − 0.63

 − 0.44

  1. CLDQ Chronic Liver Disease Questionnaire, PGIS Patient Global Impression of Severity, PRO patient-reported outcome, VAS visual analog scale
  2. aPearson correlation for itch VAS, sleep disturbance VAS, CLDQ scales, and EQ VAS; polyserial correlation for PGIS