A Matched Case-Control Study Using the Propensity Score on Differences in the Characteristics of @entity1127 between Younger and Older Koreans: Proximal Shift in the Distribution of XXXX among Older Koreans.

@entity1 @entity101 @entity1127 @entity75 @entity14 @entity1586
BACKGROUND/AIMS: Several studies have found that the frequency of @entity1127 increases significantly from the age of 50 years. The goal of this study was to determine the differences in the clinical characteristics of @entity1127 between @entity1 aged 50 years and older, and younger @entity1 . METHODS: The colonoscopy database of 3,304 @entity1 at the Yeungnam University Medical Center between January 2009 and December 2009 was reviewed retrospectively. In total, 679 @entity1 were divided into the younger group (n=170) and the older group (aged >= 50 years) (n=509). A matched case-control study was performed using propensity scores and 117 @entity1 selected from each group. RESULTS: Compared to the younger group, the older group had a significantly higher proportion of female @entity1 , and @entity1 with @entity101 , a smoking history, and a history of taking medications. After performing the matched case-control study, 234 @entity1 and 679 @entity1586 were included in the analysis. Compared to the younger @entity1 , the older @entity1 had a significantly higher proportion of @entity75 (57.3% vs 25.6%, p<0.001), left- and right-side distribution (35.9% vs 12.0%, p<0.001), and larger @entity1127 (mean 9.1 mm vs 6.3 mm, p<0.001). A left-sided distribution was less common in the older group than in the younger group (35.0% vs 51.3%, p=0.025). CONCLUSIONS: The methods used to screen for @entity14 in older @entity1 should include colonoscopy due to the shift to the right side as a common location for @entity1127 in that age group.
