Improve Research Reproducibility A Bio-protocol resource
- Home
- Protocols
-
Request a Protocol
Ask a
question
Favorite
Trained interviewers obtained information about age, gender, education (illiterate, under diploma, diploma, or educated), marriage status (single, married, or divorced), smoking status (never smoker, former smoker, light smoker, or heavy smoker), and occupation (employee, housekeeper, retired, or unemployed). We categorized the smoking status into two groups: “smokers” including current smokers or “non-smokers” including former smokers /never.
Copyright and License information: The Author(s) ©2022
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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.
Do you have any questions about this protocol?
Post your question to gather feedback from the community. We will also invite the authors of this article to respond.
Post a Question0 Q&A
