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Proc SIGCHI Conf Hum Factor Comput Syst. 2017 May 2;2017:6850-6863. doi: 10.1145/3025453.3025480.

TummyTrials: A Feasibility Study of Using Self-Experimentation to Detect Individualized Food Triggers.

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Computer Science & Engineering, DUB Group, University of Washington, Seattle, WA, United States.
Human Centered Design & Engineering, DUB Group, University of Washington, Seattle, WA, United States.
Center for Addiction Science and Technology, Duke University, Durham, NC, United States.
Division of Gastroenterology, DUB Group, University of Washington, Seattle, WA, United States.


Diagnostic self-tracking, the recording of personal information to diagnose or manage a health condition, is a common practice, especially for people with chronic conditions. Unfortunately, many who attempt diagnostic self-tracking have trouble accomplishing their goals. People often lack knowledge and skills needed to design and conduct scientifically rigorous experiments, and current tools provide little support. To address these shortcomings and explore opportunities for diagnostic self-tracking, we designed, developed, and evaluated a mobile app that applies a self-experimentation framework to support patients suffering from irritable bowel syndrome (IBS) in identifying their personal food triggers. TummyTrials aids a person in designing, executing, and analyzing self-experiments to evaluate whether a specific food triggers their symptoms. We examined the feasibility of this approach in a field study with 15 IBS patients, finding that participants could use the tool to reliably undergo a self-experiment. However, we also discovered an underlying tension between scientific validity and the lived experience of self-experimentation. We discuss challenges of applying clinical research methods in everyday life, motivating a need for the design of self-experimentation systems to balance rigor with the uncertainties of everyday life.


Food; H.5.2. Information Interfaces and Presentation (e.g., HCI): User Interfaces; Irritable Bowel Syndrome; J.3. Life and Medical Sciences: Health; Personal Informatics; Self-Experimentation; Self-Tracking; Symptom Triggers

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