Skip to main content

Table 4 Convergent and discriminant validity of the Urgency NRS at baseline and week 12

From: Psychometric evaluation of the Urgency NRS as a new patient-reported outcome measure for patients with ulcerative colitis

 

Baseline

Week 12

n

Spearman correlation coefficient a

95% CI

n

Spearman correlation coefficient a

95% CI

IBDQ

Bowel symptoms

1136

 − 0.42

(− 0.47, − 0.37)

1079

 − 0.60

(− 0.64, − 0.56)

Systemic symptoms

1136

 − 0.37

(− 0.42, − 0.32)

1079

 − 0.50

(− 0.55, − 0.46)

Emotional functioning

1136

 − 0.31

(− 0.37, − 0.26)

1079

 − 0.46

(− 0.51, − 0.42)

Social functioning

1136

 − 0.38

(− 0.42, − 0.32)

1079

 − 0.50

(− 0.54, − 0.45)

Total score

1136

 − 0.41

(− 0.45, − 0.36)

1079

 − 0.57

(− 0.61, − 0.53)

PGRS

1148

0.56

(0.52, 0.60)

1086

0.67

(0.63, 0.70)

PGRCb

–

–

–

1079

0.52

(0.47, 0.56)

MMS

Stool frequency

1148

0.30

(0.25, 0.35)

1087

0.49

(0.44, 0.53)

Rectal bleeding

1 148

0.28

(0.22, 0.33)

1087

0.39

(0.33, 0.44)

Endoscopic subscore

1147

0.07

(0.01, 0.13)

1079

0.33

(0.27, 0.38)

Total score

1147

0.36

(0.31, 0.41)

1079

0.52

(0.47, 0.56)

Geboes score

1,128

0.02

(− 0.04, 0.08)

1064

0.28

(0.23, 0.34)

  1. CI confidence interval, IBDQ Inflammatory Bowel Disease Questionnaire, MMS modified Mayo score, NRS Numeric Rating Scale, PGRC Patient Global Rating of Change, PGRS Patient Global Rating of Severity
  2. a > 0.5 = strong, 0.3 to 0.5 = moderate, and < 0.3 = weak
  3. bNot assessed at baseline