Background/AimsFunctional dyspepsia (FD) is one of the most common gastrointestinal disorders, and FD imposes social and economic burden worldwide. The aim of this study is to identify the prevalence and risk factors of FD in health check-up population in tertiary centers in Korea.MethodsA nationwide multicenter prospective study was performed at 9 tertiary healthcare centers in Korea between September 2016 and June 2017. A total of 2525 subjects were investigated based on endoscopic findings and questionnaires with the Rome III criteria, and Helicobacter pylori serology (IgG).ResultsA total of 1714 subjects without organic disease were enrolled. The mean (± SD) age was 51.5 (± 12.7) years, and 917 patients (53.5%) were female. The proportion of H. pylori seropositivity was 51.0% (874/1714). The prevalence of FD was 10.3% (176/1714), and the subtypes of postprandial distress syndrome alone, epigastric pain syndrome alone, and postprandial distress syndrome-epigastric pain syndrome overlap were 4.8%, 3.0%, and 2.5%, respectively. Multivariate analysis showed that female gender (OR, 1.58; 95% CI, 1.14–2.21) and education below college level (OR, 1.45; 95% CI, 1.01–2.07) were related to FD. Multivariate analysis based on age 60 showed female gender as a significant (OR, 2.90; 95% CI, 1.06–7.94) factor in the group ≥60 years.ConclusionsThe prevalence of FD was 10.3% in the health check-up population in Korea. Female sex and education below college level were risk factors for FD. Female sex is a risk factor for FD in old age, underscoring the need for close attention in this age group.
BackgroundSerrated lesions of the colorectum as categorized by pathology include hyperplastic polyps, sessile serrated adenomas without dysplasia, and traditional serrated adenomas with dysplasia. The aim of this study was to investigate the prevalence of various subtypes of serrated lesions by age.MethodsIn this study, 28,544 consecutive asymptomatic patients (aged 22–88 years) were evaluated during health check-ups involving colonoscopies performed by gastroenterologists at a single institution from 2005 to 2012.ResultsThe adenoma detection rate during colonoscopies for patients aged ≥50 years was 31.8% (25.0–35.8%). The serrated lesion detection rate for patients aged ≥50 years was 15.3% (10.5–19.6%). Serrated lesions were detected in 15.1% of all patients with subtype prevalences of 14.7% for hyperplastic polyps, 0.5% for sessile serrated adenomas, and 0.1% for traditional serrated adenomas. The prevalence of conventional adenomas increased sharply with age (5.0% in patients aged 20–29 years, 10.9% in those aged 30–39 years, 21.8% in those aged 40–49 years, 29.5% in those aged 50–59 years, 36.9% in those aged 60–69 years, and 40.7% in those aged ≥70 years) (trend P = 0.027). In contrast, the prevalence of serrated lesions increased only slightly with age (10.0% in patients aged 20–29 years, 11.8% in those aged 30–39 years, 14.8% in those aged 40–49 years, 15.3% in those aged 50–59 years, 16.8% in those aged 60–69 years, and 16.4% in those aged ≥70 years) (trend P = 0.036).ConclusionsThe screening colonoscopy detection rate of serrated lesions, including sessile serrated adenomas and traditional serrated adenomas, appears to be relatively high among young patients aged <50 years.
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