  The rise in popularity of physical activity trackers provides extensive
opportunities for research on personal health, however, barriers such as
compliance attrition can lead to substantial losses in data. As such, insights
into student's compliance habits could support researcher's decisions when
designing long-term studies. In this paper, we examined 392 students on a
college campus currently two and a half years into an ongoing study. We find
that compliance data from as early as one month correlated with student's
likelihood of dropping out of the study (p < .001) and compliance long-term (p
< .001). The findings in this paper identify long-term compliance habits and
the viability of their early detection.
