Table 4 Reasons for Drop Out and Adverse Events

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]

nil

nil

nil

nil events occurred

Houle et al. [72]

data not published

data not published

data not published

data 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