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A Mobile Ecological Momentary Intervention for Reducing Experiential Avoidance in the Context of Rumination: Protocol for a Randomized Controlled Trial

A Mobile Ecological Momentary Intervention for Reducing Experiential Avoidance in the Context of Rumination: Protocol for a Randomized Controlled Trial

Sample size was calculated using G*Power version 3.1 [65] for a repeated-measures design with 4 independent conditions measured at 3 time points and assuming a medium effect size. This indicated a required sample size of 60 with equal randomization of participants across groups, which aligns with previous intervention studies in the field [66-68].

Steven Barnes, Marta Szastok, Małgorzata Para, Fabian Morawiec, Maciej Grzeszczuk, Szymon Wójcik, Barbara Karpowicz, Pavlo Zinevych, Anna Jaskulska, Wiesław Kopeć, Monika Kornacka

JMIR Res Protoc 2025;14:e66067