Accepted for/Published in: JMIR Formative Research
Date Submitted: Apr 5, 2022
Date Accepted: Aug 29, 2022
A Tailored Gender-Sensitive mHealth Weight-Loss Intervention (I-GENDO): Development and Process Evaluation
ABSTRACT
Background:
Given the increase in prevalence of overweight and obesity worldwide, the number of digital weight-loss interventions have also risen. These interventions, however, often lack theoretical background and data on long-term effectiveness. The consideration of individual and gender-specific differences in weight-related psychological parameters might enhance the efficacy and sustainability of mobile-based weight-loss interventions.
Objective:
Introduction to and process evaluation of a tailored gender-sensitive mHealth weight-loss intervention (I-GENDO).
Methods:
Data from the intervention arm of the I-GENDO project (ClinicalTrials.gov Identifier: NCT04080193) processed. N = 116 (66.4% female, Mage = 47.28, SDage = 11.66, MBMI = 33.58, SDBMI = 3.79) individuals with overweight and obesity were included in the analyses. The computer-based assignment of main modules, focusing on different psychological factors associated with overweight and obesity, the self-selection of gender-targeted module versions, and utilization patterns were evaluated. Moreover, gender differences in the evaluation and usability assessment were analyzed.
Results:
Overall, the compliance (78%) and satisfaction with the app (86%) were high and were comparable to other mobile weight-loss interventions. More women obtained the main module that focused on emotion regulation skills. The majority of men and women selected female-targeted versions of the main modules. Women used the app more frequently and longer compared to men and were more satisfied with the the app’s ease of use.
Conclusions:
We developed a tailored gender-sensitive mHealth weight-loss intervention. The satisfaction, usability, and engagement with the intervention were satisfactory. Gender differences need to be considered in the evaluation of the effectiveness and sustainability of the intervention. Clinical Trial: ClinicalTrials.gov Identifier: NCT04080193
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