Quality Indicators for the Detection of Helicobacter pylori-Negative Early Gastric Cancer: A Retrospective Observational Study
	    		
		   		
		   			
		   		
	    	
    	- Author:
	        		
		        		
		        		
			        		Fumiaki ISHIBASHI
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Konomi KOBAYASHI
			        		
			        		;
		        		
		        		
		        		
			        		Keita FUKUSHIMA
			        		
			        		;
		        		
		        		
		        		
			        		Ryu TANAKA
			        		
			        		;
		        		
		        		
		        		
			        		Tomohiro KAWAKAMI
			        		
			        		;
		        		
		        		
		        		
			        		Junko KATO
			        		
			        		;
		        		
		        		
		        		
			        		Kazuaki SUGIHARA
			        		
			        		
		        		
		        		
		        		
			        		
			        		Author Information
			        		
 - Publication Type:Original Article
 - From:Clinical Endoscopy 2020;53(6):698-704
 - CountryRepublic of Korea
 - Language:English
 - 
		        	Abstract:
			       	
			       		
				        
				        	 Background/Aims:While Helicobacter pylori (HP)-negative gastric cancer is frequently reported, little is known about the predictors for detecting HP-negative early gastric cancer (EGC). We aimed to evaluate the predictors for the detection of HP-negative EGC. 
				        	
Methods:We retrospectively reviewed 13,477 consecutive asymptomatic cases where upper endoscopy was performed by nine physicians from April 2017 to March 2019 and analyzed the detection rate of high-risk lesions (HRLs), including EGC, tubular adenoma, and lymphoma, according to the status of HP infection. The observation time was corrected for multiple regression analyses.
Results:For all physicians, the average observation time for screening HP-eradicated and -naïve patients was shorter than that for screening HP-positive patients (p<0.05). Multiple regression analyses revealed that the observation time in the three groups was an independent predictor for detecting HRLs in HP-eradicated patients (p=0.03106, 0.01263, and 0.02485, respectively), while experience of endoscopy was an independent predictor for detecting HRLs in HP-naïve patients (p=0.02638).
Conclusions:While observation time during screening endoscopy was a quality indicator for detecting HRLs in HP-eradicated patients, experience of endoscopy was a quality indicator for detecting HRLs in HP-naïve patients. 
            