1.Analysis of Changes in Relative Value Scale and Frequency of Surgery and Procedures in Surgery Departments Over the Past 18 Years: Secondary Publication
Jae Hoon CHO ; Sei Young LEE ; Seung Hoon LEE ; Seog-Kyun MUN ; Jung Hyun CHANG ; Chan-Soon PARK
Korean Journal of Otolaryngology - Head and Neck Surgery 2025;68(2):67-73
		                        		
		                        			 Background and Objectives:
		                        			The purpose of this study was to compare and analyze the 18- year change in the relative value scale (RVS) in otolaryngology in relation to other surgical departments so as to help make future policy decisions.Subjects and Method Data on RVSs and addition rates, the deparments of main managed care, frequency of practice, and number of specialists were collected for all surgeries and procedures conducted in 2004, 2008, 2013, 2018, and 2022. Among these, an analysis was conducted for nine surgical departments. The number of surgeries and procedure items, the median value of the RVS, and the usage amount (i.e., RVS of all items multiplied by the frequency of surgeries and procedures) were calculated. 
		                        		
		                        			Results:
		                        			Over the past 18 years, the increase in the number of surgeries, procedure items and RVS in otolaryngology has grown smaller than that in other surgical departments, and the usage has decreased very sharply; in essence, the usage per specialist has actually decreased compared to 18 years ago. 
		                        		
		                        			Conclusion
		                        			Compared to other departments, RVS in otorhinolaryngology has shown very little change over the past period of 18 years. It is necessary to reasonably increase the currently undervalued RVS in otorhinolaryngology, particularly focusing on surgeries and procedures. 
		                        		
		                        		
		                        		
		                        	
2.Analysis of Changes in Relative Value Scale and Frequency of Surgery and Procedures in Surgery Departments Over the Past 18 Years: Secondary Publication
Jae Hoon CHO ; Sei Young LEE ; Seung Hoon LEE ; Seog-Kyun MUN ; Jung Hyun CHANG ; Chan-Soon PARK
Korean Journal of Otolaryngology - Head and Neck Surgery 2025;68(2):67-73
		                        		
		                        			 Background and Objectives:
		                        			The purpose of this study was to compare and analyze the 18- year change in the relative value scale (RVS) in otolaryngology in relation to other surgical departments so as to help make future policy decisions.Subjects and Method Data on RVSs and addition rates, the deparments of main managed care, frequency of practice, and number of specialists were collected for all surgeries and procedures conducted in 2004, 2008, 2013, 2018, and 2022. Among these, an analysis was conducted for nine surgical departments. The number of surgeries and procedure items, the median value of the RVS, and the usage amount (i.e., RVS of all items multiplied by the frequency of surgeries and procedures) were calculated. 
		                        		
		                        			Results:
		                        			Over the past 18 years, the increase in the number of surgeries, procedure items and RVS in otolaryngology has grown smaller than that in other surgical departments, and the usage has decreased very sharply; in essence, the usage per specialist has actually decreased compared to 18 years ago. 
		                        		
		                        			Conclusion
		                        			Compared to other departments, RVS in otorhinolaryngology has shown very little change over the past period of 18 years. It is necessary to reasonably increase the currently undervalued RVS in otorhinolaryngology, particularly focusing on surgeries and procedures. 
		                        		
		                        		
		                        		
		                        	
3.Analysis of Changes in Relative Value Scale and Frequency of Surgery and Procedures in Surgery Departments Over the Past 18 Years: Secondary Publication
Jae Hoon CHO ; Sei Young LEE ; Seung Hoon LEE ; Seog-Kyun MUN ; Jung Hyun CHANG ; Chan-Soon PARK
Korean Journal of Otolaryngology - Head and Neck Surgery 2025;68(2):67-73
		                        		
		                        			 Background and Objectives:
		                        			The purpose of this study was to compare and analyze the 18- year change in the relative value scale (RVS) in otolaryngology in relation to other surgical departments so as to help make future policy decisions.Subjects and Method Data on RVSs and addition rates, the deparments of main managed care, frequency of practice, and number of specialists were collected for all surgeries and procedures conducted in 2004, 2008, 2013, 2018, and 2022. Among these, an analysis was conducted for nine surgical departments. The number of surgeries and procedure items, the median value of the RVS, and the usage amount (i.e., RVS of all items multiplied by the frequency of surgeries and procedures) were calculated. 
		                        		
		                        			Results:
		                        			Over the past 18 years, the increase in the number of surgeries, procedure items and RVS in otolaryngology has grown smaller than that in other surgical departments, and the usage has decreased very sharply; in essence, the usage per specialist has actually decreased compared to 18 years ago. 
		                        		
		                        			Conclusion
		                        			Compared to other departments, RVS in otorhinolaryngology has shown very little change over the past period of 18 years. It is necessary to reasonably increase the currently undervalued RVS in otorhinolaryngology, particularly focusing on surgeries and procedures. 
		                        		
		                        		
		                        		
		                        	
4.Analysis of Changes in Relative Value Scale and Frequency of Surgery and Procedures in Surgery Departments Over the Past 18 Years: Secondary Publication
Jae Hoon CHO ; Sei Young LEE ; Seung Hoon LEE ; Seog-Kyun MUN ; Jung Hyun CHANG ; Chan-Soon PARK
Korean Journal of Otolaryngology - Head and Neck Surgery 2025;68(2):67-73
		                        		
		                        			 Background and Objectives:
		                        			The purpose of this study was to compare and analyze the 18- year change in the relative value scale (RVS) in otolaryngology in relation to other surgical departments so as to help make future policy decisions.Subjects and Method Data on RVSs and addition rates, the deparments of main managed care, frequency of practice, and number of specialists were collected for all surgeries and procedures conducted in 2004, 2008, 2013, 2018, and 2022. Among these, an analysis was conducted for nine surgical departments. The number of surgeries and procedure items, the median value of the RVS, and the usage amount (i.e., RVS of all items multiplied by the frequency of surgeries and procedures) were calculated. 
		                        		
		                        			Results:
		                        			Over the past 18 years, the increase in the number of surgeries, procedure items and RVS in otolaryngology has grown smaller than that in other surgical departments, and the usage has decreased very sharply; in essence, the usage per specialist has actually decreased compared to 18 years ago. 
		                        		
		                        			Conclusion
		                        			Compared to other departments, RVS in otorhinolaryngology has shown very little change over the past period of 18 years. It is necessary to reasonably increase the currently undervalued RVS in otorhinolaryngology, particularly focusing on surgeries and procedures. 
		                        		
		                        		
		                        		
		                        	
5.Analysis of Changes in Relative Value Scale and Frequency of Surgery and Procedures in Surgery Departments Over the Past 18 Years: Secondary Publication
Jae Hoon CHO ; Sei Young LEE ; Seung Hoon LEE ; Seog-Kyun MUN ; Jung Hyun CHANG ; Chan-Soon PARK
Korean Journal of Otolaryngology - Head and Neck Surgery 2025;68(2):67-73
		                        		
		                        			 Background and Objectives:
		                        			The purpose of this study was to compare and analyze the 18- year change in the relative value scale (RVS) in otolaryngology in relation to other surgical departments so as to help make future policy decisions.Subjects and Method Data on RVSs and addition rates, the deparments of main managed care, frequency of practice, and number of specialists were collected for all surgeries and procedures conducted in 2004, 2008, 2013, 2018, and 2022. Among these, an analysis was conducted for nine surgical departments. The number of surgeries and procedure items, the median value of the RVS, and the usage amount (i.e., RVS of all items multiplied by the frequency of surgeries and procedures) were calculated. 
		                        		
		                        			Results:
		                        			Over the past 18 years, the increase in the number of surgeries, procedure items and RVS in otolaryngology has grown smaller than that in other surgical departments, and the usage has decreased very sharply; in essence, the usage per specialist has actually decreased compared to 18 years ago. 
		                        		
		                        			Conclusion
		                        			Compared to other departments, RVS in otorhinolaryngology has shown very little change over the past period of 18 years. It is necessary to reasonably increase the currently undervalued RVS in otorhinolaryngology, particularly focusing on surgeries and procedures. 
		                        		
		                        		
		                        		
		                        	
6.Polycyclic Aromatic Hydrocarbons Mediate the Association between Tobacco Smoking and Alcohol Use Disorder
Dongkyu LEE ; Mun-Joo BAE ; Mi-Ji KIM ; Sung Soo OH ; Ki Soo PARK ; Chan Joo LEE ; Sungha PARK ; Seung-Koo LEE ; Sang-Baek KOH ; Sun Jae JUNG ; Changsoo KIM ; Jaelim CHO
Yonsei Medical Journal 2024;65(12):752-760
		                        		
		                        			 Purpose:
		                        			Smoking is causally related to alcohol use disorder. Although polycyclic aromatic hydrocarbons (PAHs) are major neurotoxic pollutants in tobacco smoke, evidence is lacking on the role of PAHs in the relationship between smoking and alcohol use disorder. This study investigated the types of PAHs associated with smoking and whether exposure to those PAHs mediated the effect of smoking on alcohol use disorder. 
		                        		
		                        			Materials and Methods:
		                        			A total of 968 male firefighters were analyzed. Smoking history and cumulative pack-years were obtained using self-reported questionnaires. Alcohol use disorder was defined using the Alcohol Use Disorder Identification Test.PAH exposure was assessed by urinary metabolites. Regression analyses were performed between exposure (smoking), outcome (alcohol use disorder), and mediator (PAH metabolites) variables. A mediation analysis was performed to test the indirect effect of PAH metabolites on the association between smoking and alcohol use disorder. All analyses were repeated for 770 participants who were followed up after 2 years, while alcohol use disorder was redefined from follow-up data ensuring the temporal sequence of the variables. 
		                        		
		                        			Results:
		                        			Both 2-naphthol [β=0.78, 95% confidence interval (CI): 0.59–0.98] and 2-hydroxyfluorene (β=0.69, 95% CI: 0.56–0.82) were associated with smoking history. Furthermore, 2-naphthol and 2-hydroxyfluorene mediated the associations of smoking history (proportion mediated: 14.2%, 23.6% respectively) or cumulative pack-years (proportion mediated: 14.4%, 25.4% respectively) with alcohol use disorder. The results were consistent in longitudinal settings. 
		                        		
		                        			Conclusion
		                        			Exposure to PAHs mediated the association between tobacco smoking and alcohol use disorder. PAH exposure from tobacco may increase the risk of addictive disorders. 
		                        		
		                        		
		                        		
		                        	
7.Polycyclic Aromatic Hydrocarbons Mediate the Association between Tobacco Smoking and Alcohol Use Disorder
Dongkyu LEE ; Mun-Joo BAE ; Mi-Ji KIM ; Sung Soo OH ; Ki Soo PARK ; Chan Joo LEE ; Sungha PARK ; Seung-Koo LEE ; Sang-Baek KOH ; Sun Jae JUNG ; Changsoo KIM ; Jaelim CHO
Yonsei Medical Journal 2024;65(12):752-760
		                        		
		                        			 Purpose:
		                        			Smoking is causally related to alcohol use disorder. Although polycyclic aromatic hydrocarbons (PAHs) are major neurotoxic pollutants in tobacco smoke, evidence is lacking on the role of PAHs in the relationship between smoking and alcohol use disorder. This study investigated the types of PAHs associated with smoking and whether exposure to those PAHs mediated the effect of smoking on alcohol use disorder. 
		                        		
		                        			Materials and Methods:
		                        			A total of 968 male firefighters were analyzed. Smoking history and cumulative pack-years were obtained using self-reported questionnaires. Alcohol use disorder was defined using the Alcohol Use Disorder Identification Test.PAH exposure was assessed by urinary metabolites. Regression analyses were performed between exposure (smoking), outcome (alcohol use disorder), and mediator (PAH metabolites) variables. A mediation analysis was performed to test the indirect effect of PAH metabolites on the association between smoking and alcohol use disorder. All analyses were repeated for 770 participants who were followed up after 2 years, while alcohol use disorder was redefined from follow-up data ensuring the temporal sequence of the variables. 
		                        		
		                        			Results:
		                        			Both 2-naphthol [β=0.78, 95% confidence interval (CI): 0.59–0.98] and 2-hydroxyfluorene (β=0.69, 95% CI: 0.56–0.82) were associated with smoking history. Furthermore, 2-naphthol and 2-hydroxyfluorene mediated the associations of smoking history (proportion mediated: 14.2%, 23.6% respectively) or cumulative pack-years (proportion mediated: 14.4%, 25.4% respectively) with alcohol use disorder. The results were consistent in longitudinal settings. 
		                        		
		                        			Conclusion
		                        			Exposure to PAHs mediated the association between tobacco smoking and alcohol use disorder. PAH exposure from tobacco may increase the risk of addictive disorders. 
		                        		
		                        		
		                        		
		                        	
8.Polycyclic Aromatic Hydrocarbons Mediate the Association between Tobacco Smoking and Alcohol Use Disorder
Dongkyu LEE ; Mun-Joo BAE ; Mi-Ji KIM ; Sung Soo OH ; Ki Soo PARK ; Chan Joo LEE ; Sungha PARK ; Seung-Koo LEE ; Sang-Baek KOH ; Sun Jae JUNG ; Changsoo KIM ; Jaelim CHO
Yonsei Medical Journal 2024;65(12):752-760
		                        		
		                        			 Purpose:
		                        			Smoking is causally related to alcohol use disorder. Although polycyclic aromatic hydrocarbons (PAHs) are major neurotoxic pollutants in tobacco smoke, evidence is lacking on the role of PAHs in the relationship between smoking and alcohol use disorder. This study investigated the types of PAHs associated with smoking and whether exposure to those PAHs mediated the effect of smoking on alcohol use disorder. 
		                        		
		                        			Materials and Methods:
		                        			A total of 968 male firefighters were analyzed. Smoking history and cumulative pack-years were obtained using self-reported questionnaires. Alcohol use disorder was defined using the Alcohol Use Disorder Identification Test.PAH exposure was assessed by urinary metabolites. Regression analyses were performed between exposure (smoking), outcome (alcohol use disorder), and mediator (PAH metabolites) variables. A mediation analysis was performed to test the indirect effect of PAH metabolites on the association between smoking and alcohol use disorder. All analyses were repeated for 770 participants who were followed up after 2 years, while alcohol use disorder was redefined from follow-up data ensuring the temporal sequence of the variables. 
		                        		
		                        			Results:
		                        			Both 2-naphthol [β=0.78, 95% confidence interval (CI): 0.59–0.98] and 2-hydroxyfluorene (β=0.69, 95% CI: 0.56–0.82) were associated with smoking history. Furthermore, 2-naphthol and 2-hydroxyfluorene mediated the associations of smoking history (proportion mediated: 14.2%, 23.6% respectively) or cumulative pack-years (proportion mediated: 14.4%, 25.4% respectively) with alcohol use disorder. The results were consistent in longitudinal settings. 
		                        		
		                        			Conclusion
		                        			Exposure to PAHs mediated the association between tobacco smoking and alcohol use disorder. PAH exposure from tobacco may increase the risk of addictive disorders. 
		                        		
		                        		
		                        		
		                        	
9.Polycyclic Aromatic Hydrocarbons Mediate the Association between Tobacco Smoking and Alcohol Use Disorder
Dongkyu LEE ; Mun-Joo BAE ; Mi-Ji KIM ; Sung Soo OH ; Ki Soo PARK ; Chan Joo LEE ; Sungha PARK ; Seung-Koo LEE ; Sang-Baek KOH ; Sun Jae JUNG ; Changsoo KIM ; Jaelim CHO
Yonsei Medical Journal 2024;65(12):752-760
		                        		
		                        			 Purpose:
		                        			Smoking is causally related to alcohol use disorder. Although polycyclic aromatic hydrocarbons (PAHs) are major neurotoxic pollutants in tobacco smoke, evidence is lacking on the role of PAHs in the relationship between smoking and alcohol use disorder. This study investigated the types of PAHs associated with smoking and whether exposure to those PAHs mediated the effect of smoking on alcohol use disorder. 
		                        		
		                        			Materials and Methods:
		                        			A total of 968 male firefighters were analyzed. Smoking history and cumulative pack-years were obtained using self-reported questionnaires. Alcohol use disorder was defined using the Alcohol Use Disorder Identification Test.PAH exposure was assessed by urinary metabolites. Regression analyses were performed between exposure (smoking), outcome (alcohol use disorder), and mediator (PAH metabolites) variables. A mediation analysis was performed to test the indirect effect of PAH metabolites on the association between smoking and alcohol use disorder. All analyses were repeated for 770 participants who were followed up after 2 years, while alcohol use disorder was redefined from follow-up data ensuring the temporal sequence of the variables. 
		                        		
		                        			Results:
		                        			Both 2-naphthol [β=0.78, 95% confidence interval (CI): 0.59–0.98] and 2-hydroxyfluorene (β=0.69, 95% CI: 0.56–0.82) were associated with smoking history. Furthermore, 2-naphthol and 2-hydroxyfluorene mediated the associations of smoking history (proportion mediated: 14.2%, 23.6% respectively) or cumulative pack-years (proportion mediated: 14.4%, 25.4% respectively) with alcohol use disorder. The results were consistent in longitudinal settings. 
		                        		
		                        			Conclusion
		                        			Exposure to PAHs mediated the association between tobacco smoking and alcohol use disorder. PAH exposure from tobacco may increase the risk of addictive disorders. 
		                        		
		                        		
		                        		
		                        	
10.Polycyclic Aromatic Hydrocarbons Mediate the Association between Tobacco Smoking and Alcohol Use Disorder
Dongkyu LEE ; Mun-Joo BAE ; Mi-Ji KIM ; Sung Soo OH ; Ki Soo PARK ; Chan Joo LEE ; Sungha PARK ; Seung-Koo LEE ; Sang-Baek KOH ; Sun Jae JUNG ; Changsoo KIM ; Jaelim CHO
Yonsei Medical Journal 2024;65(12):752-760
		                        		
		                        			 Purpose:
		                        			Smoking is causally related to alcohol use disorder. Although polycyclic aromatic hydrocarbons (PAHs) are major neurotoxic pollutants in tobacco smoke, evidence is lacking on the role of PAHs in the relationship between smoking and alcohol use disorder. This study investigated the types of PAHs associated with smoking and whether exposure to those PAHs mediated the effect of smoking on alcohol use disorder. 
		                        		
		                        			Materials and Methods:
		                        			A total of 968 male firefighters were analyzed. Smoking history and cumulative pack-years were obtained using self-reported questionnaires. Alcohol use disorder was defined using the Alcohol Use Disorder Identification Test.PAH exposure was assessed by urinary metabolites. Regression analyses were performed between exposure (smoking), outcome (alcohol use disorder), and mediator (PAH metabolites) variables. A mediation analysis was performed to test the indirect effect of PAH metabolites on the association between smoking and alcohol use disorder. All analyses were repeated for 770 participants who were followed up after 2 years, while alcohol use disorder was redefined from follow-up data ensuring the temporal sequence of the variables. 
		                        		
		                        			Results:
		                        			Both 2-naphthol [β=0.78, 95% confidence interval (CI): 0.59–0.98] and 2-hydroxyfluorene (β=0.69, 95% CI: 0.56–0.82) were associated with smoking history. Furthermore, 2-naphthol and 2-hydroxyfluorene mediated the associations of smoking history (proportion mediated: 14.2%, 23.6% respectively) or cumulative pack-years (proportion mediated: 14.4%, 25.4% respectively) with alcohol use disorder. The results were consistent in longitudinal settings. 
		                        		
		                        			Conclusion
		                        			Exposure to PAHs mediated the association between tobacco smoking and alcohol use disorder. PAH exposure from tobacco may increase the risk of addictive disorders. 
		                        		
		                        		
		                        		
		                        	
            
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