. 2018 Nov 21;6(11):e11335. doi: 10.2196/11335
©Il-Young Jang, Hae Reong Kim, Eunju Lee, Hee-Won Jung, Hyelim Park, Seon-Hee Cheon, Young Soo Lee, Yu Rang Park. Originally published in JMIR Mhealth and Uhealth (http://mhealth.jmir.org), 21.11.2018.
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Figure 2.
Average step count and number of continuous users in the robust and prefrail groups by month.