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Combining Persuasive System Design Principles and Behavior Change Techniques in Digital Interventions Supporting Long-term Weight Loss Maintenance: Design and Development of eCHANGE

The estimated number of people with obesity nearly tripled between 1975 and 2016, with >650 million adults with obesity (BMI≥30 kg/m²) worldwide in 2016 [5]. Similarly, the number of people with cardiovascular diseases increased by >50% in the period from 1990 to 2019 [6], and people living with diabetes increased by >60% in the period from 2009 to 2019 [7].

Rikke Aune Asbjørnsen, Jøran Hjelmesæth, Mirjam Lien Smedsrød, Jobke Wentzel, Marianne Ollivier, Matthew M Clark, Julia E W C van Gemert-Pijnen, Lise Solberg Nes

JMIR Hum Factors 2022;9(2):e37372

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Identifying Persuasive Design Principles and Behavior Change Techniques Supporting End User Values and Needs in eHealth Interventions for Long-Term Weight Loss Maintenance: Qualitative Study

Thematic analysis was applied, inspired by Brown and Clark [92], using NVivo (QSR International) qualitative analysis software. End user needs were identified through in-depth analysis and inductive coding of the data until saturation was reached [92]. A second researcher (MS) analyzed 17% (4/23) of the transcribed interviews for analysis validation.

Rikke Aune Aune Asbjørnsen, Jobke Wentzel, Mirjam Lien Smedsrød, Jøran Hjelmesæth, Matthew M Clark, Lise Solberg Nes, Julia E W C Van Gemert-Pijnen