Psychometric assessment of the IBS-D Daily Symptom Diary and Symptom Event Log

Psychometric assessment of the IBS-D Daily Symptom Diary and Symptom Event Log

Purpose Diarrhea-predominant irritable bowel syndrome (IBS-D) can considerably impact patients' lives. Patient-reported symptoms are crucial in understanding the diagnosis and progression of IBS-D. This study psychometrically evaluates the newly developed IBS-D Daily Symptom Diary and Symptom E...

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Veröffentlicht in:Quality of Life Research. - Springer Science + Business Media. - 25(2016), 12, Seite 3197-3208
1. Verfasser: Rosa, Kathleen (VerfasserIn)
Weitere Verfasser: Delgado-Herrera, Leticia, Zeiher, Bernie, Banderas, Benjamin, Arbuckle, Rob, Spears, Glen, Hudgens, Stacie
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Quality of Life Research
Schlagworte:Health sciences Behavioral sciences Mathematics Education
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245 1 0 |a Psychometric assessment of the IBS-D Daily Symptom Diary and Symptom Event Log 
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520 |a Purpose Diarrhea-predominant irritable bowel syndrome (IBS-D) can considerably impact patients' lives. Patient-reported symptoms are crucial in understanding the diagnosis and progression of IBS-D. This study psychometrically evaluates the newly developed IBS-D Daily Symptom Diary and Symptom Event Log (hereafter, "Event Log") according to US regulatory recommendations. Methods A US-based observational field study was conducted to understand cross-sectional psychometric properties of the IBS-D Daily Symptom Diary and Event Log. Analyses included item descriptive statistics, item-to-item correlations, reliability, and construct validity. Results The IBS-D Daily Symptom Diary and Event Log had no items with excessive missing data. With the exception of two items ("frequency of gas" and "accidents"), moderate to high inter-item correlations were observed among all items of the IBS-D Daily Symptom Diary and Event Log (day 1 range 0.67-0.90). Item scores demonstrated reliability, with the exception of the "frequency of gas" and "accidents" items of the Diary and "incomplete evacuation" item of the Event Log. The pattern of correlations of the IBS-D Daily Symptom Diary and Event Log item scores with generic and disease-specific measures was as expected, moderate for similar constructs and low for dissimilar constructs, supporting construct validity. Known-groups methods showed statistically significant differences and monotonie trends in each of the IBS-D Daily Symptom Diary item scores among groups defined by patients' IBS-D severity ratings ("none"/"mild," "moderate," or "severe'/"very severe"), supporting construct validity. Conclusions Initial psychometric results support the reliability and validity of the items of the IBS-D Daily Symptom Diary and Event Log. 
540 |a © Springer International Publishing 2016 
650 4 |a Health sciences  |x Medical conditions  |x Symptoms 
650 4 |a Behavioral sciences  |x Psychology  |x Clinical psychology  |x Psychological symptoms 
650 4 |a Behavioral sciences  |x Sociology  |x Human societies  |x Public safety  |x Accidents 
650 4 |a Health sciences  |x Medical conditions  |x Diseases  |x Digestive system diseases  |x Gastrointestinal diseases  |x Intestinal diseases  |x Colonic diseases  |x Irritable bowel syndrome 
650 4 |a Health sciences  |x Medical conditions  |x Symptoms  |x Pain  |x Abdominal pain 
650 4 |a Behavioral sciences  |x Psychology  |x Psychometrics 
650 4 |a Health sciences  |x Medical conditions  |x Symptoms  |x Physical symptoms  |x Digestive symptoms  |x Abdominal cramps 
650 4 |a Mathematics  |x Applied mathematics  |x Statistics  |x Applied statistics  |x Descriptive statistics  |x Correlations 
650 4 |a Education  |x Formal education  |x Pedagogy  |x Educational methods  |x Educational testing  |x Test validity  |x Construct validity 
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700 1 |a Delgado-Herrera, Leticia  |e verfasserin  |4 aut 
700 1 |a Zeiher, Bernie  |e verfasserin  |4 aut 
700 1 |a Banderas, Benjamin  |e verfasserin  |4 aut 
700 1 |a Arbuckle, Rob  |e verfasserin  |4 aut 
700 1 |a Spears, Glen  |e verfasserin  |4 aut 
700 1 |a Hudgens, Stacie  |e verfasserin  |4 aut 
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