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An Evaluation of a Mobile App for Chronic Low Back Pain Management: Prospective Pilot Study
The Cohen d was calculated from the raw means that yielded effect sizes. Power was also calculated with G*Power version 3.1.9.7 (Heinrich-Heine-Universität Düsseldorf) [19] post hoc, using the sample size, α, and the effect size.
A total of 30 participants completed the program; however, 3 were excluded from analysis due to incomplete baseline PHQ-4 answers.
JMIR Form Res 2022;6(10):e40869
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