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韓瑞璟 서울大學校 保健大學院 1966 公衆保健雜誌 Vol.3 No.2
The purpose of this investigation was carried out to conform the result of legal or illegal artificial dyes using in marketing food. The experment was made toward 147 food stuff which a mainly sold in the market places,including juices, drops and candies. The study was conducted from August 1 to October 1 in 1966. The following conclusions were obtained: 1.Legaly approved dyes were used in 55.78% of 147 cases and illegal dyes were used in 44.22% of 147 cases. 2.Illegal dyes were found less frequently in the drops and candies bearing trade -names than in those without trade-names. 3.Scarlet, Rhodamin B and Auramin mainly occupy 80% of illegal dyes found in the study. 4.Twenty nine cases were mixture of two dyes and 62.07% of all mixed dyes were those with blue and yellow. 5.Out of 29 cases mixed with two dyes, only 17.25% of them were found as legal in both dyes,82.75% of them were found to be legal in one dyes only, and none of them was found as illegal in both dyes.
Understanding noninferiority trials
한서경 대한소아청소년과학회 2012 Clinical and Experimental Pediatrics (CEP) Vol.55 No.11
Noninferiority trials test whether a new experimental treatment is not unacceptably less efficacious than an active control treatment already in use. With continuous improvements in health technologies,standard care, and clinical outcomes, the incremental benefits of newly developed treatments may be only marginal over existing treatments. Sometimes assigning patients to a placebo is unethical. In such circumstances, there has been increasing emphasis on the use of noninferiority trial designs. Noninferiority trials are more complex to design, conduct, and interpret than typical superiority trials. This paper reviews the concept of noninferiority trials and discusses some important issues related to them.