title: Validation of Spanish language dyspepsia questionnaire.
abstract: No dyspepsia-specific questionnaire currently exists in Spanish. The Spanish Language Dyspepsia Questionnaire (SLDQ) was developed based on Rome dyspepsia criteria, other questionnaires, and common symptoms. Self-reported normal and dyspeptic volunteers (N = 63) in Chiapas, Mexico, participated in a validation study. We assessed intra- and interrater reliability by test-retest studies and established validity by both correlation to the Short Form-36 (SF-36) and comparison of scores between normals and dyspeptics. The total SLDQ score showed a wide distribution (range 0-78, mean 23.7 +/- 21.9). Internal reliability of the SLDQ was high (Cronbach's a = 0.93). Intra- and interrater reliability were excellent (scores from the first and second interviews not statistically different; P = 0.94; intraclass correlation coefficient = 0.96). SLDQ scales correlated appropriately with the SF-36. The SLDQ distinguished self-classified normals from dyspeptics (P < 0.001). The SLDQ fills the unmet need for a valid, reproducible, and multidimensional Spanish-language instrument to measure dyspepsia. Additionally, we have made suggestions for the development of symptom-quantifying questionnaires.
authors.affiliation: Department of Medicine, Stanford University, California, USA.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Goldman
authors.forename: Donald F
authors.initials: DF
authors.lastname: Conrad
authors.forename: Catherine
authors.initials: C
authors.lastname: Ley
authors.forename: David
authors.initials: D
authors.lastname: Halperin
authors.forename: Maria
authors.initials: M
authors.lastname: de la Luz Sanchez
authors.forename: Rosario
authors.initials: R
authors.lastname: Villacorta
authors.forename: Julie
authors.initials: J
authors.lastname: Parsonnet
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004415:Dyspepsia / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D008800:Mexico; D008875:Middle Aged; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D009626:Terminology as Topic