Sleep Related Questionnaires

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Nocturnal Gastro-esophageal Reflux Disease Symptom Severity and Impact Questionnaire (N-GSSIQ)

Name of questionnaire Nocturnal Gastro-esophageal Reflux Disease Symptom Severity and Impact Questionnaire (N-GSSIQ)
Type of questionnaire  Assesses the severity, frequency and impact of nocturnal GERD symptoms in adults, age range 27–73 years
Number of items 20
Number of domains /categories/subscales 3 subscales
Name of subscales  Nocturnal GERD symptoms, Morning Impact of Nocturnal GERD and Concern about Nocturnal GERD
Scaling of items 0-5 or 0-4
Scoring available: with permission or free Information not available
 Test-retest reliability Yes
Validity of questionnare  established Yes,  correlated with physician diagnosis of GERD and other GERD questionnaires; patients had GERD diagnosed by pH probe or endoscopy or response to medications etc
Internal consistency  Yes  (Cronbach's alpha 0.84-0.94)
Language English
Translations in other languages (if yes, then list the languages) Not applicable
Developer name  B.M. Spiegel,MD,et al
Developer contact information bspiegel@mednet.ucla.edu
Availability of questionnaire:  Use with permission of developer
Limitations A 2-week recall period of the measure that may does not allow for measurement of patient day-to-day variability.
Link to the questionnaire (if available) Available as supplemental file  to original publication
Other comments Patient-rated scale. Scales were significantly correlated with similar
measures and disease severity (0.41–0.81; P < 0.0001).
References (original publication) Spiegel BM, Roberts L, Mody R, Harding G, Kothari-Talwar S, Kahrilas PJ, Camilleri ML, Dabbous O, Revicki DA. The development and validation of a Nocturnal Gastro-oesophageal Reflux Disease Symptom Severity and Impact Questionnaire for adults. Aliment Pharmacol Ther. 2010 Aug;32(4):591-602.
Last Reviewed: June 2016