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Data Analysis and Visualization of Newspaper Articles on Thirdhand Smoke: A Topic Modeling Approach
Qian Liu1,2, Qiuyi Chen1, Jiayi Shen3
1School of Journalism and Communication, Jinan University, Guangzhou, China.
JMIR Medical Informatics
|January 30, 2019
Summary
Thirdhand smoke (THS) is a growing concern in China. Media analysis reveals that cancer and smoking cessation are the most reported THS topics, highlighting a need for evidence-based reporting.
Area of Science:
- Environmental Health
- Public Health Communication
- Media Studies
Background:
- Thirdhand smoke (THS) comprises residual tobacco smoke pollutants on surfaces and in dust.
- These pollutants can be re-emitted or react to form secondary pollutants.
- THS has been a significant and growing topic of discussion in China.
Purpose of the Study:
- To analyze media reports on THS in China using topic modeling.
- To understand the media's role in communicating THS as a public health issue.
- To identify key themes and trends in THS media coverage.
Main Methods:
- Data sourced from Wiser and Factiva news databases (2013-2017).
- Latent Dirichlet Allocation (LDA) used to identify top 10 THS topics.
- LDAvis and Multidimensional Scaling for topic visualization and intertopic distance analysis.
Main Results:
- 745 articles analyzed; US led publications (152), China (279), US (363).
- In China, 'Cancer' was the most frequent topic (31.9% of reports).
- 'Control of quitting smoking' was the second most common topic (approx. 15%).
Conclusions:
- Topic modeling provides valuable insights into media reporting on THS.
- Chinese media coverage focuses on diseases, PM2.5, and control measures.
- Recommends more scientific, less sensationalized reporting and further sentiment analysis studies.
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