한국식품위생안전성학회지 (Journal of Food Hygiene and Safety)

  • 제30권2호
  • /
  • Pages.127-131
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  • 2015
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  • 1229-1153(pISSN)
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  • 2465-9223(eISSN)
한국식품위생안전성학회 (The Korean Society of Food Hygiene and Safety)
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위해평가 및 모니터링 수행을 위한 표본크기 추정연구: 식품 중 중금속 모니터링 데이터를 중심으로

Sample Size Estimation for Risk Assessment and Monitoring Based on Heavy Metal Monitoring Data from Food Items

  • 강희승 (식품의약품안전평가원 식품위해평가부 식품위해평가과) ;
  • 고아라 (식품의약품안전평가원 식품위해평가부 식품위해평가과) ;
  • 정다현 (식품의약품안전평가원 식품위해평가부 식품위해평가과) ;
  • 하미라 (식품의약품안전평가원 식품위해평가부 식품위해평가과) ;
  • 황명실 (식품의약품안전평가원 식품위해평가부 식품위해평가과) ;
  • 홍진환 (식품의약품안전평가원 식품위해평가부 식품위해평가과) ;
  • 황인균 (식품의약품안전평가원 식품위해평가부 식품위해평가과) ;
  • 윤혜정 (식품의약품안전평가원 식품위해평가부 오염물질과)
  • Kang, Hui Seung (Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation) ;
  • Ko, Ahra (Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation) ;
  • Jeong, Da-Hyun (Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation) ;
  • Ha, Mira (Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation) ;
  • Hwang, Myung-Sil (Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation) ;
  • Hong, Jin-Hwan (Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation) ;
  • Hwang, In Gyun (Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation) ;
  • Yoon, Hae-Jung (Food contaminants Division, National Institute of Food and Drug Safety Evaluation)
  • 투고 : 2014.09.20
  • 심사 : 2015.03.16
  • 발행 : 2015.06.30
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초록

본 연구에서는 기존에 수행된 식품 중금속 모니터링 데이터를 이용하여 위해평가 및 모니터링을 수행할 때 요구되는 표본 수를 추정하고자 하였다. 중금속 3종 (카드뮴, 납 및 수은)과 17개의 식품을 대상으로 2,400개의 모니터링 데이터를 선정하여 연구에 활용하였다. 기존의 연구에서 수행된 모니터링 데이터의 표준편차와 오차범위 및 신뢰구간 값(95, 99% CI)을 활용하여 표본 수 추정공식에 따라 계산하였다. 표본 수 추정 공식에 따라 표본 크기를 추정한 결과, 95% 신뢰구간에서 카드뮴의 경우 계산된 표본의 크기는 최소 8개에서 최대 90개, 납의 경우 최소 7개에서 최대 1,062개, 수은의 경우 최소 11개에서 최대 238개로 각각 추정되었다. 식품 중 중금속 데이터의 표준 편차와 오차범위가 표본 수를 추정하는데 가장 큰 영향을 주는 것으로 나타났다. 본 연구에서는 모니터링 데이터의 특성을 반영하여 표본 크기를 추정하고자 하였으며, 이는 향후 위해평가 및 모니터링 수행 계획을 수립하기 위한 표본 수를 결정하는 기초연구로 활용될 수 있을 것이다.

This study aimed to calculate the required sample size to monitor food items during risk assessment studies. Based on a data set from a previous study (2,400 data points for heavy metal assessment from 17 food items), the required sample size was estimated by using a single equation with the standard deviation value, error range, and 95%-99% confidence intervals. The required sample size was calculated with each of the heavy metals for the assessment. The results showed that cadmium, lead, and mercury of required sample sizes for further monitoring were range of 7-90, 7-1, 062, and 11-238, respectively. We found that the required sample size varied depending on the standard deviation of the previous monitoring data. This study provides a basic method to determine the minimum sample size required in food monitoring to devise practical sampling strategies.

키워드

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