Survey Methodology for Gastroesophageal Reflux Disease in China
Author Information
Author(s): Cao Yang, Yan Xiaoyan, Ma Xiu-Qiang, Wang Rui, Johansson Saga, Wallander Mari-Ann, He Jia
Primary Institution: Second Military Medical University, Shanghai, PR China
Hypothesis
The aim of this pilot study was to develop and validate a methodology for the epidemiological study of GERD in China.
Conclusion
This study developed and tested a successful survey methodology for the investigation of GERD in China.
Supporting Evidence
- The response rate was 86%.
- Test-retest reliability coefficients for the questionnaires were high, indicating good reliability.
- Construct validity was supported by strong correlations between dimension scores and total scores.
Takeaway
Researchers created a way to ask people in China about their acid reflux problems, and it worked well.
Methodology
Regionally stratified, randomized samples of Shanghai residents completed several validated questionnaires.
Potential Biases
Potential responder bias due to the high response rate and the use of trained facilitators.
Limitations
The combined questionnaire was lengthy, and the study could not sample migrant workers.
Participant Demographics
Average age was 47 years, 55% female, with varying education and income levels across urban, suburban, and rural areas.
Statistical Information
P-Value
0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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