To get representative health data, researchers hand out fitbits

A study finds that a representative sample of people given wearable data collection devices provides more equitable and accurate health data than larger convenience samples of people who already own wearable devices. Leveraging the smartwatches and other data-logging wearables that people already have is a tempting way to gather data, but such groups overrepresent the wealthy, urban, white, and fit people who tend to buy these products.

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