Survey on Knowledge of Helicobacter Pylori and Early Gastrointestinal Cancer from Two Different Regions in China

This study employed a cross-sectional survey design. Between August and September 2025, online and offline questionnaire surveys were conducted among permanent residents of Shanghai and Shanxi regions using the "Wenjuanxing" platform. The sampling method combined random sampling and "snowball" sampling to expand sample coverage and representativeness. Inclusion criteria were: (1) age 18 years or older; (2) ability to independently read and complete the questionnaire; (3) voluntary participation in the study. The exclusion criterion was: incomplete questionnaire responses.