Upper gastrointestinal endoscopic screening serves as a primary prevention approach by reducing modifiable risk factors

Figure 1 Changes in modifiable risk factors in the screening and control arms in the two questionnaire investigations. A: The prevalence of cigarette smoking in the screening and control arms at the two questionnaire investigations; B: The prevalence of alcohol drinking in the screening and control arms at the two questionnaire investigations; C: The distribution of dietary scores in the screening and control arms at the two questionnaire investigations.