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. 2018 Oct 31;8:16098. doi: 10.1038/s41598-018-34617-y

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The structure of the decision tree model. Red categories indicate the prevalence of hypertension and blue categories indicate the prevalence of no hypertension. Vigorous/moderate/light activity at least 10 minutes, vigorous/moderate/light activity over half an hour/2 hours/4 hours one day (1: Yes, 2: No); Sleep duration (1: <7 hours, 2: 7–10 hours, 3: ≥10 hours); Drinking frequency (1: Never, 2: <1/month 3: >1/month); Residence (1: Main city zone, 2: Other, 3: Village); Gender (1: Male, 2: Female); Smoking status (1: Ever or current, 2: Never). Hypertension was defined as systolic BP ≥ 140 mm Hg, or diastolic BP ≥ 90 mm Hg, or self-reported use of antihypertensive medications (old definition) in this diagram.