. 2017 Oct 3;3(4):e64. doi: 10.2196/publichealth.8078
©Hongxi Yang, Shu Li, Li Sun, Xinyu Zhang, Jie Hou, Yaogang Wang. Originally published in JMIR Public Health and Surveillance (http://publichealth.jmir.org), 03.10.2017.
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Figure 2.
Estimate of regression coefficient (β) with 95% CI.