Journal of medical Internet research
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J. Med. Internet Res. · Jan 2013
Attrition revisited: adherence and retention in a web-based alcohol trial.
Attrition is a noted feature of eHealth interventions and trials. In 2005, Eysenbach published a landmark paper calling for a "science of attrition," suggesting that the 2 forms of attrition--nonusage attrition (low adherence to the intervention) and dropout attrition (poor retention to follow-up)--may be related and that this potential relationship deserved further study. ⋯ In this dataset, adherence and retention were related in a complex fashion. We propose a possible explanatory model for these data.