Wearable Data for Personalized Prognostication in Cancer: A Registry Protocol

Feasibility of data collection

The proportion of participants for whom a successful data connection is established between their Apple Health data and the study registry will be quantified". Then for each variable captured by Apple Health, we will quantify the following feasibility metrics for data collection, evaluated separately for the retrospective (up to 8 years) and prospective (up to 5 years) data periods: For each subject, the total amount of retrospective (and prospective) HealthKit data available per patient in days and months will be calculated. For each subject, the number of days per week that a variable is available will be estimated and summarized by the average and standard deviation across weeks (or months). For both 1-2, the metrics will be calculated when pooling all available data, and separately for windows of 6 months. We will examine histograms and boxplots of the distributions across the cohort.