PMID- 26938478
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20160304
LR  - 20230406
IS  - 2155-384X (Print)
IS  - 2155-384X (Electronic)
IS  - 2155-384X (Linking)
VI  - 7
IP  - 3
DP  - 2016 Mar 3
TI  - Feasibility and Usability Pilot Study of a Novel Irritable Bowel Syndrome Food 
      and Gastrointestinal Symptom Journal Smartphone App.
PG  - e147
LID - 10.1038/ctg.2016.9 [doi]
AB  - OBJECTIVES: Seventy percent of patients with irritable bowel syndrome (IBS) 
      identify certain foods as triggers for their symptom flare-ups. To help identify 
      potential trigger foods, practitioners often rely on patient food and 
      gastrointestinal (GI) symptom journaling. The aim of the study was to evaluate 
      the feasibility and usability of a novel food and symptom journal app, 
      specifically designed for patients with IBS. Secondary aims were to explore the 
      effect of using the app on GI symptoms and to describe associations between diet 
      and GI symptoms suggested by individual patient data. METHODS: The feasibility 
      and usability of the novel app was studied in 11 IBS patients (8 women), aged 
      21-65 years. Participants were asked to log GI symptoms (abdominal pain, 
      bloating, diarrhea, constipation) using a 100-point color-graded sliding scale 
      (green=none, red=severe) four times a day and to log every meal/snack they ate 
      (at least three times a day) over a 2-week period. The app's feasibility as a 
      data collection tool was evaluated by daily completion, compliance, data 
      hoarding, and fatigability rates. Usability was evaluated with the System 
      Usability Scale (SUS). To explore potential impact of using the app on bowel 
      distress, we compared before and after intervention IBS-Symptom Severity Scale 
      (IBS-SSS) scores. Meal entries were analyzed for nutrients using the Nutrition 
      Data System for Research. Regression analyses were conducted for each participant 
      journal to explore relationships between meal nutrients and subsequent GI 
      symptoms. RESULTS: Daily average completion rates of the minimum requested 
      entries for meal and GI symptoms were 112+/-47% and 78+/-44%, respectively. Average 
      24-h compliance rates were 90+/-19% and 94+/-12%, respectively. The SUS score was 
      above average (mean 83, range 65-97.5; n=10). Most participants did not have a 
      clinically significant decrease in IBS-SSS. At least one strong association 
      (P</=0.05) between GI symptoms and a meal nutrient was found in 73% of 
      participants. The mean number of associations was 2 (range 0-7; n=11). Patterns 
      of associations differed between individual participants. CONCLUSIONS: Our app 
      appeared to be a feasible and usable tool for IBS patients. Our findings are in 
      line with anecdotes that most IBS patients have food triggers and that these vary 
      by individual. Future studies can explore whether individualized dietary changes 
      guided by an app can result in IBS symptom improvement.
FAU - Zia, Jasmine
AU  - Zia J
AD  - Division of Gastroenterology and Hepatology, Department of Medicine, Stanford 
      University School of Medicine, Stanford, California, USA.
AD  - Division of Gastroenterology and Hepatology, Department of Medicine, University 
      of Washington, Seattle, Washington, USA.
FAU - Schroeder, Jessica
AU  - Schroeder J
AD  - Department of Computer Science Engineering, University of Washington, Seattle, 
      Washington, USA.
FAU - Munson, Sean
AU  - Munson S
AD  - Department of Human Centered Design and Engineering, University of Washington, 
      Seattle, Washington, USA.
FAU - Fogarty, James
AU  - Fogarty J
AD  - Department of Computer Science Engineering, University of Washington, Seattle, 
      Washington, USA.
FAU - Nguyen, Linda
AU  - Nguyen L
AD  - Division of Gastroenterology and Hepatology, Department of Medicine, Stanford 
      University School of Medicine, Stanford, California, USA.
FAU - Barney, Pamela
AU  - Barney P
AD  - Department of Biobehavioral Nursing and Health Systems, University of Washington, 
      Seattle, Washington, USA.
FAU - Heitkemper, Margaret
AU  - Heitkemper M
AD  - Department of Biobehavioral Nursing and Health Systems, University of Washington, 
      Seattle, Washington, USA.
FAU - Ladabaum, Uri
AU  - Ladabaum U
AD  - Division of Gastroenterology and Hepatology, Department of Medicine, Stanford 
      University School of Medicine, Stanford, California, USA.
LA  - eng
PT  - Journal Article
DEP - 20160303
PL  - United States
TA  - Clin Transl Gastroenterol
JT  - Clinical and translational gastroenterology
JID - 101532142
PMC - PMC4822101
EDAT- 2016/03/05 06:00
MHDA- 2016/03/05 06:01
PMCR- 2016/03/01
CRDT- 2016/03/04 06:00
PHST- 2015/09/04 00:00 [received]
PHST- 2015/12/04 00:00 [accepted]
PHST- 2016/03/04 06:00 [entrez]
PHST- 2016/03/05 06:00 [pubmed]
PHST- 2016/03/05 06:01 [medline]
PHST- 2016/03/01 00:00 [pmc-release]
AID - ctg20169 [pii]
AID - 10.1038/ctg.2016.9 [doi]
PST - epublish
SO  - Clin Transl Gastroenterol. 2016 Mar 3;7(3):e147. doi: 10.1038/ctg.2016.9.