Dutch–Flemish translation and validation of the gastrointestinal symptom scales from the patient‑reported outcomes measurement information system (PROMIS)®

Journal of Patient-Reported Outcomes

Table 5 Correlations of DF-PROMIS gastrointestinal Scales with legacy measures

DF-PROMIS gastrointestinal scales	GSRS reflux	GSRS Indigestion	GSRS belly pain	GSRS diarrhea	GSRS constipation	GSRS total	IBD-Q	IBS-QOL	Confirmed (%)
Reflux	0.55	0.47	0.47	0.19	0.33	0.53	− 0.33	− 0.38	75
Disrupted Swallowing	0.42	0.30	0.36	0.15	0.29	0.38	− .019	− 0.26	50
Diarrhea	0.06	0.37	0.39	0.79	0.21	0.56	− 0.66	− 0.40	88
Bowel incontinence	0.06	0.20	0.18	0.45	0.19	0.30	− 0.46	− 25	75
Nausea and vomiting	0.31	0.48	0.64	0.34	0.33	0.58	− 0.54	− 0.41	75
Constipation	0.20	0.42	0.34	0.17	0.78	0.49	− 0.27	− 0.29	63
Belly pain	0.31	0.63	0.65	0.57	0.52	0.75	− 0.75	− 0.53	88
Gas and Bloating	0.33	0.74	0.51	0.35	0.49	0.65	− 0.48	− 0.47	75

Pearson correlation coefficients were calculated. Results in accordance with a priori hypothesized correlations are bold
GSRS gastrointestinal symptom rating scale, IBDQ Inflammatory bowel disease questionnaire, IBS-QOL Irritable bowel syndrome-quality of life, PROMIS patient-reported outcomes measurement information system