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Table 3 Feasibility criteria of the study

From: Repetitive vascular occlusion stimulus (RVOS) versus standard care to prevent muscle wasting in critically ill patients (ROSProx):a study protocol for a pilot randomised controlled trial

Trial processOutcome measureFeasibility criteria
ScreeningPercentage of potentially eligible patients being missed< 55% of potentially eligible patients being missed
ConsentPercentage of personal consultee/participants agreeing to enrolment> 75% of personal consultees/participants agreeing to enrolment
Recruitment rateNumber of patients recruitedRecruit 30 patients within 16 months
RandomisationDemographic and severity of illness in the intervention and control armsBalanced demographic and severity of illness in intervention and control arm participants
Delivery of interventionPercentage of RVOS sessions performed out of the total possible sessions80% of the scheduled RVOS sessions performed
Retention ratePercentage of patients that remain on the ICU for the full 10 days of study enrolment> 50% of enrolled patients remain on the ICU for the full 10 days of study enrolment
Outcome measure assessmentsPercentage of outcome measure assessments performed within 24 h of the scheduled timePercentage of quality-of-life questionnaires completed at 90-day follow-up100% of RFCSA ultrasound measurements performed within 24 h of the scheduled time> 75% of vascular, strength and functional capacity measures performed within 24 h of the scheduled time> 75% of surviving patients complete the quality-of-life questionnaires at 90-day follow-up
Electronic case report form data collectionPercentage of missing outcome and clinical data< 10% missing outcome data including ICU and hospital length of stay and survival< 10% missing clinical data obtained from clinical medical notes and electronic patient records, such as severity of illness scores and requirement for organ supportive therapies
  1. ICU intensive care unit, RFCSA rectus femoris cross sectional area, RVOS repetitive vascular occlusion stimulus