INTRODUCTION: Accurate preoperative staging is important for @entity1 with @entity356 . This study identifies the rate of utilization of endoscopic ultrasound (EUS) and its associated factors in Medicare @entity1 with @entity356 . METHODS: The linked Surveillance, Epidemiology, and End Results (SEER)-Medicare claims database was queried from 1996 to 2009 for @entity1 with @entity356 who underwent gastric resection. Analysis with univariate, multivariate, and Cochran-Armitage trend tests were performed. RESULTS: In 5826 @entity1 with @entity356 with an average age of 76.9        6.62  years, 59.1  % had regionalized spread of @entity5 . EUS utilization increased significantly during the study period from 2.6  % to 22  % (p   <   0.0001). EUS @entity1 were more likely to be male, white, married, have higher education and income quartiles, and live in large metropolitan areas compared to non-EUS @entity1 (p   <   0.0001). Even after controlling for confounding factors, @entity1 who underwent EUS were more likely to have >15 lymph nodes examined ( @entity69800 , 95  % confidence interval (CI) 1.04-1.53) and have the administration of both pre- and postoperative chemotherapy (OR 1.27, 95  % CI 1.03-1.57). CONCLUSION: EUS is currently under-utilized but increasing. @entity1 who underwent EUS (12.9  %) were more likely to receive other NCCN-recommended care, including perioperative chemotherapy and adequate nodal retrieval.

National Trends in Utilization of Endoscopic Ultrasound for XXXX : a SEER-Medicare Study.

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity5 :: ('MESH:D009369', 'Disease') :: ['cancer'] @entity356 :: ('MESH:D013274', 'Disease') :: ['gastric cancer', 'gastric adenocarcinoma'] @entity69800 :: ('138883', 'Gene') :: ['odds ratio  (OR) 1.26']
@entity356 :: (MESH:D013274,Disease) :: ['Gastric Cancer']
