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Table 4 Reasons for Drop Out and Adverse Events

From: Impact of wearable physical activity monitoring devices with exercise prescription or advice in the maintenance phase of cardiac rehabilitation: systematic review and meta-analysis

StudyReasons for Drop Out (n)Adverse Events
 controlinterventionunclassified/other 
Avila et al. [67]loss of interest (2)new cardiac intervention (2)loss of interest (2) nil events occurred
 6- week follow up:unrelated medical reasons (3)work (1)withdrew consent (1)excluded (5)6- week follow up: unrelated medicalreasons (4)work (1)withdrew consent (1)excluded (7) data not published
Butler et al. [68]6- month follow up:unrelated medical reasons (3)deceased (1)6- month follow up:unable to be contacted (2) family needs (1)work (1)  
Cupples et al. [69]influenza (1)anaemia (1)depression (1) ankle injuryknee injuryback painshortness of breath(no events prevented completion of study)
Duscha et al. [70]reason not published (2)reason not published (3)unusable data: failed to give a good effort on CPX; ICD reset (2)lost to follow up (2)randomised group not publishedknee injury from falling on icerare blood disease diagnosissevere fishing hook wound
Guiraud et al. [71]nilnilnilnil events occurred
Houle et al. [72]data not publisheddata not publisheddata not publisheddata not published
Skobel et al. [73]withdrew (18)cancelled follow up (3)withdrew (15)poor compliance (17)lack of time, internet issues, demotivation (21)chronic infection (1)back pain (1)technical problems (21)control;new onset atrial fibrillation (1)new angina at rest (1)pseudo aneurysm of femoral artery after PCI (1)intervention:none related to exercisepatients required angiography (not related to training) (2)chest pain requiring CABG before exercise (2)
ter Hoeve et al. [52]lost to follow up (62)prematurely quit (52)declined further participation:poor motivation (5) unknown (4)medical complications (1)pedometer:lost to follow up (57)prematurely quit (43)declined further participation:poor motivation (5) unknown (8)medical complications (1) data not published
Varnfield et al. [53]logistical:time16%location 7%transport 24%competing life demands: work 10%stress 4%change in circumstances: deterioration of health unrelated to CR 14%lack of motivation 4%change in circumstancesdeterioration of health unrelated to CR 9%difficulty using IT tools 7% data not published
  1. Abbreviations: CPx cardiopulmonary exercise test, ICD implantable cardioverter-defibrillator, PCI percutaneous coronary intervention, CABG coronary artery bypass graft surgery, CR cardiac rehabilitation, IT information technology