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. Author manuscript; available in PMC: 2018 Jan 19.
Published in final edited form as: Nature. 2017 Jul 10;547(7663):336–339. doi: 10.1038/nature23018

Extended Data Figure 1. Activity and obesity data gathered with smartphones exhibit well established trends.

Extended Data Figure 1

(a) Daily step counts across age and (b) BMI groups for all users. Error bars correspond to bootstrapped 95% confidence intervals. Observed trends in the dataset are consistent with previous findings; that is, activity decreases with increasing age1, 8, 31, 32 and BMI8, 15, 31, and is lower in females than in males1, 8, 31–33.