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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 medical
reasons (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 injury
knee injury
back pain
shortness 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 published
knee injury from falling on ice
rare blood disease diagnosis
severe 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 exercise
patients 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 circumstances
deterioration 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