Table 1.
UGI, upper gastrointestinal; CI, confidence interval; NHI, National Health Insurance; MAP, Medical Aid Program. a)Participants who received 'needing further evaluation,' 'suspicious of cancer,' or 'gastric cancer' or received additional upper endoscopy for further evaluation after undergoing UGI series were deemed to be recall cases, b)Participants who received 'needing further evaluation,' 'suspicious of cancer,' or 'gastric cancer' were deemed to be recall cases.