Published on in Vol 7, No 1 (2019): January

How Well iPhones Measure Steps in Free-Living Conditions: Cross-Sectional Validation Study

How Well iPhones Measure Steps in Free-Living Conditions: Cross-Sectional Validation Study

How Well iPhones Measure Steps in Free-Living Conditions: Cross-Sectional Validation Study

Shiho Amagasa   1 , MMS ;   Masamitsu Kamada   2, 3 , PhD ;   Hiroyuki Sasai   4 , PhD ;   Noritoshi Fukushima   1 , PhD, MD ;   Hiroyuki Kikuchi   1 , PhD ;   I-Min Lee   5, 6 , MBBS, MPH, ScD ;   Shigeru Inoue   1 , PhD, MD

1 Department of Preventive Medicine and Public Health, Tokyo Medical University, Shinjuku-ku, Japan

2 Department of Social and Behavioral Sciences, Harvard TH Chan School of Public Health, Boston, MA, United States

3 Department of Health Sociology and Health Education, School of Public Health, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Japan

4 Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro-ku, Japan

5 Division of Preventive Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States

6 Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States

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