Prevalence and Annual Incidence of Thyroid Disease in Korea from 2006 to 2015: A Nationwide Population-Based Cohort Study.
	    		
		   		
		   			
		   		
	    	
    	 
    	10.3803/EnM.2018.33.2.260
   		
        
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Hyemi KWON
			        		
			        		
			        		
			        			1
			        			,
			        		
			        			2
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Jin hyung JUNG
			        		
			        		;
		        		
		        		
		        		
			        		Kyung Do HAN
			        		
			        		;
		        		
		        		
		        		
			        		Yong Gyu PARK
			        		
			        		;
		        		
		        		
		        		
			        		Jung Hwan CHO
			        		
			        		;
		        		
		        		
		        		
			        		Da Young LEE
			        		
			        		;
		        		
		        		
		        		
			        		Ji Min HAN
			        		
			        		;
		        		
		        		
		        		
			        		Se Eun PARK
			        		
			        		;
		        		
		        		
		        		
			        		Eun Jung RHEE
			        		
			        		;
		        		
		        		
		        		
			        		Won Young LEE
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea. wonyoung
			        		
			        			2. lee@samsung.com
			        		
		        		
	        		
        		 
        	
        	
        	
        		- Publication Type:Original Article
 
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		Thyroid;
			        		
			        		
			        		
				        		Hypothyroidism;
			        		
			        		
			        		
				        		Hyperthyroidism;
			        		
			        		
			        		
				        		Prevalence;
			        		
			        		
			        		
				        		Incidence
			        		
			        		
	        			
        			
        		
 
        	
            
            	- MeSH:
            	
	        			
	        				
	        				
				        		
					        		Arrhythmias, Cardiac;
				        		
			        		
				        		
					        		Cardiovascular Diseases;
				        		
			        		
				        		
					        		Cohort Studies*;
				        		
			        		
				        		
					        		Drug Prescriptions;
				        		
			        		
				        		
					        		Female;
				        		
			        		
				        		
					        		Humans;
				        		
			        		
				        		
					        		Hypercholesterolemia;
				        		
			        		
				        		
					        		Hyperthyroidism;
				        		
			        		
				        		
					        		Hypothyroidism;
				        		
			        		
				        		
					        		Incidence*;
				        		
			        		
				        		
					        		Korea*;
				        		
			        		
				        		
					        		Male;
				        		
			        		
				        		
					        		Methimazole;
				        		
			        		
				        		
					        		Osteoporosis;
				        		
			        		
				        		
					        		Prevalence*;
				        		
			        		
				        		
					        		Propylthiouracil;
				        		
			        		
				        		
					        		Risk Factors;
				        		
			        		
				        		
					        		Thyroid Diseases*;
				        		
			        		
				        		
					        		Thyroid Gland*;
				        		
			        		
				        		
					        		Thyroid Neoplasms;
				        		
			        		
				        		
					        		Thyroid Nodule
				        		
			        		
	        			
	        			
            	
            	
 
            
            
            	- From:Endocrinology and Metabolism
	            		
	            		 2018;33(2):260-267
	            	
            	
 
            
            
            	- CountryRepublic of Korea
 
            
            
            	- Language:English
 
            
            
            	- 
		        	Abstract:
			       	
			       		
				        
				        	BACKGROUND: The incidence of thyroid nodules has increased worldwide in recent years. Thyroid dysfunction is a potential risk factor for hypercholesterolemia, cardiovascular disease, osteoporosis, arrhythmia, and neuropsychiatric disease. This study investigated the prevalence and annual incidence of thyroid nodules, hypothyroidism, and hyperthyroidism in Koreans. METHODS: In this nationwide population-based cohort study, 51,834,660 subjects were included using the National Health Information database from 2006 to 2015, after the exclusion of subjects with thyroid cancer. RESULTS: The prevalence in Korea in 2015 of thyroid nodules, hypothyroidism in patients taking thyroid hormone, and hyperthyroidism in patients undergoing treatment was 15.82/1,000 population, 15.94/1,000 population, and 2.76/1,000 population, respectively. All these diseases were more prevalent among women than among men. The number of incident cases of these three thyroid diseases steadily increased from 2006 to 2012, and then decreased through 2015. The incidence of thyroid nodules, hypothyroidism treated with thyroid hormone, and treated hyperthyroidism was 6.79/1,000 population, 1.76/1,000 population, and 0.55/1,000 population, respectively, in Korea in 2015. The use of methimazole continuously increased, from 33% of total antithyroid drug prescriptions in 2006 to 74.4% in 2015, and it became the most frequently prescribed antithyroid drug in Korea. In contrast, the use of propylthiouracil continuously decreased. CONCLUSION: This was the first nationwide study of the prevalence and annual incidence of thyroid nodules, hypothyroidism, and hyperthyroidism to take into account recent changes and to include the current status of patients receiving treatment.