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Effect of hyperlipidemia in patients with a history of colon cancer.

e15603 Background: The most common cancer of the digestive system is colorectal cancer. 5-year survival rate of early-stage colon cancer is > 90% whereas it is only 10% for patients with distant metastases. Recent studies have shown that lipids influence a tumor’s metastatic capabilities. High fat diet has also been linked with colon cancer. In this study, we try to understand the effect of hyperlipidemia in patients with a history of colon cancer. Methods: This is a retrospective study examining data from the National Inpatient Sample (NIS) Database of the year 2018. We identified patients with any history of Colon cancer using their specific ICD-10 codes. Additionally, we queried for ICD10 codes for hyperlipidemia. Primary outcome was inpatient mortality. Secondary outcome was hospital length of stay and total charge. Utilizing STATA MP 16.1 we performed multivariate logistic regression analysis. Various comorbidities including previous history of coronary artery disease, peripheral artery disease, stroke, smoking, diabetes, hypertension and chemotherapy were incorporated into the analysis. Additionally, hospital demographics were included in the analysis as well including race, hospital bed size teaching status, location, region, insurance and patient income. Data was considered statistically significant if p-value was < 0.05. Results: The total number of patients included in this study were 34,792. They were all adults age > 18 years. Approximately 49% were females. Mean age was 67 years and average hospital length of stay was 6.5 days. After running multivariable analysis for inpatient mortality, we noted that patients with hyperlipidemia had lower odds of mortality (Odds Ratio (OR) 0.64, 95% Confidence Intervals (CI) 0.56 – 0.73). Higher odds of mortality were seen in patients with coronary artery disease (OR 1.23, 95% CI 1.05 – 1.44). Among racial distributions, Blacks had higher odds of mortality when compared with White (OR 1.3, 95% CI 1.1 – 1.5). Hispanics had lower odds of inpatient mortality compared to Whites (OR 0.8, 95% CI 0.6 – 0.9). The odds of mortality were higher with increasing age (OR 1.025, 95% CI 1.02 – 1.031) and lower among females (0.82, 95% CI 0.73 – 0.91). Among secondary outcomes, hyperlipidemia did not affect the hospital length of stay or cost. Several factors increased the hospital length of stay which included any history of coronary artery disease, peripheral artery disease, or diabetes. In addition, patients admitted over the weekend had a higher length of stay. Conclusions: In this study, we find that hyperlipidemia is associated with lower mortality in patients with colon cancer. This could be possible because patients with hyperlipidemia are on statin therapy. This indirectly could point to a potential benefit of statins in colon cancer. Hyperlipidemia does not affect hospital length of stay or cost.