~/talk

Apple Health Exports

Talkat rstudio::conf 2019 · 2019-01-15..01-18· [data-visualization]
slides:none on file

Apple Health export yields 3.9 million rows (about 1.2M in the last year) in a ~3.5GB XML that unzips to a single tidy table with start/end timestamps, type, value, source and software version. R and ggplot produce full‑day heart rate plots that visibly pinpoint ER events and ECG episodes; those plots corroborate atrial fibrillation timing and influenced a clinician discussion. WatchOS version changes shift measures (resting heart rate redefinition, VO2max algorithm changes), so source and version matter to avoid double counting and misinterpretation.

AI-written summary · about

  1. 0:00Emergency room to health data
  2. 1:38Apple Health data volume and structure
  3. 3:27Apple Health Export explained
  4. 5:39Key columns in health export
  5. 6:22Resting heart rate trends
  6. 7:24VO2 max measurements
  7. 8:56ECG data and atrial fibrillation
  8. 12:24Why explore health data
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