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Skip search results from other journals and go to results- 1 Journal of Medical Internet Research
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In a systematic review by van der Meij et al [10], the effect of an e Health strategy in surgical patients was not consistent. Therefore, a small to medium effect (d=0.35) was expected from our intervention. Combined with an α of .05 and a power of 0.80, a total sample size of 260 patients was required. We aimed for 280 participants to account for loss to follow-up and nonadherence to the intervention and return of questionnaires (attrition rate 5%, rounded up to a whole number).
J Med Internet Res 2022;24(8):e37728
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