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Demographic and behavioural assessment

YL Yongze Li
DT Di Teng
XS Xiaoguang Shi
GQ Guijun Qin
YQ Yingfen Qin
HQ Huibiao Quan
BS Bingyin Shi
HS Hui Sun
JB Jianming Ba
BC Bing Chen
JD Jianling Du
LH Lanjie He
XL Xiaoyang Lai
YL Yanbo Li
HC Haiyi Chi
EL Eryuan Liao
CL Chao Liu
LL Libin Liu
XT Xulei Tang
NT Nanwei Tong
GW Guixia Wang
JZ Jin-an Zhang
YW Youmin Wang
YX Yuanming Xue
LY Li Yan
JY Jing Yang
LY Lihui Yang
YY Yongli Yao
ZY Zhen Ye
QZ Qiao Zhang
LZ Lihui Zhang
JZ Jun Zhu
MZ Mei Zhu
GN Guang Ning
YM Yiming Mu
JZ Jiajun Zhao
WT Weiping Teng
ZS Zhongyan Shan
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For each participant, a trained interviewer used a detailed questionnaire to collect information about demographic variables, behavioural factors, family history of chronic diseases, and personal medical history. Current smoking was defined as having smoked at least 100 cigarettes in one’s life and currently smoking cigarettes. Occasional smokers were defined as currently smoking fewer than 20 cigarettes a day. Regular smokers were defined as currently smoking more than 20 cigarettes a day.

Copyright and License information:  ©2020-04-28 Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.
This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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