样本量计划及官方对照的统计显著性。

IF 1.8 Q3 FOOD SCIENCE & TECHNOLOGY Italian Journal of Food Safety Pub Date : 2023-08-02 DOI:10.4081/ijfs.2023.11119
Cesare Ciccarelli, Angela Marisa Semeraro, Melina Leinoudi, Vittoria Di Trani, Anita Ciampana, Elena Ciccarelli
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引用次数: 0

摘要

验收抽样对食品安全很重要,是生产和官方控制层面的相关工具,因为它有助于决策过程,并验证质量和食品安全管理。一般来说,抽样计划是对已提交官方评估并随后接受或拒绝的产品进行假设检验。样本量与设定的风险水平、可接受的精度和可容忍的错报大小有关;因此,样本量的确定对于确定可接受的不符合程度和误差程度具有至关重要的作用。本研究使用一个基于组合学的简单预测模型,展示了当接受数量为0 (c=0)时,样本量管理如何改变拒收好批和/或接受坏批的概率。我们表明,当c=0时,测试的非常高的显著性水平对应于拒绝具有可接受的缺陷产品流行率(类型II错误)的批次的高概率。我们制作了关于不同显著性水平下的最小样本量的表格,这在该领域是有用的。样本大小在接受抽样计划中所起作用的一个典型例子是对水产品中茴香虫幼虫的目视检测。本研究在这方面进行了研究,主要是对养殖鱼类中幼虫的流行情况进行了研究。我们发现,对于≥1000个批次,样本量与批次大小没有严格的关系,但为了制定一致的控制计划并减少临床判断的可变性,控制当局需要标准化的方法。正因为如此,尽管欧洲食品安全局的意见和其他几项研究中报告了这种说法,但如果仅仅基于抽样控制计划,关于养殖鱼类中茴香酸幼虫流行率的结果并不支持可以忽略不计的风险声明。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Sample size planning and the statistical significance of official controls by sampling.

Acceptance sampling is important for food safety and is a relevant tool at production and official control levels, as it helps decision-making processes and verifies quality and food safety management. Generally, sampling plans are hypothesis tests of products that have been submitted for official appraisal and subsequent acceptance or rejection. The sample size is related to the set level of risk, the acceptable precision, and the tolerable misstatement size; therefore, sample size determination has a crucial role in setting up the accepted level of non-compliance and level of error. Using a simple predictive model based on combinatorics, this study showcases how sample size management can change the probability of rejecting good lots and/or accepting bad lots when the acceptance number is 0 (c=0). We showed that when c=0, a very high level of significance of the test corresponds to the high probability of rejecting a lot with an acceptable prevalence of defective items (type II error). We produced tables about the minimum sample size at different significance levels, which can be useful in the field. A paradigmatic example of the role of sample size in the acceptance-sampling plan is represented by the visual inspection for the detection of Anisakid larvae in fishery products. This study investigated this aspect and mainly referred to studies on the prevalence of larvae in farmed fish. We showed that, for lots ≥1000 items, the sample size is not strictly related to the lot size, but to draw a consistent control plan and reduce the variability in the clinical judgment, control authorities require a standardized approach. Because of this, the results on the prevalence of Anisakid larvae in farmed fish, if only based on sampling control plans, do not support a negligible risk statement, despite the claims reported in the EFSA opinion and several other studies.

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来源期刊
Italian Journal of Food Safety
Italian Journal of Food Safety FOOD SCIENCE & TECHNOLOGY-
CiteScore
2.50
自引率
0.00%
发文量
37
审稿时长
10 weeks
期刊介绍: The Journal of Food Safety (IJFS) is the official journal of the Italian Association of Veterinary Food Hygienists (AIVI). The Journal addresses veterinary food hygienists, specialists in the food industry and experts offering technical support and advice on food of animal origin. The Journal of Food Safety publishes original research papers concerning food safety and hygiene, animal health, zoonoses and food safety, food safety economics. Reviews, editorials, technical reports, brief notes, conference proceedings, letters to the Editor, book reviews are also welcome. Every article published in the Journal will be peer-reviewed by experts in the field and selected by members of the editorial board. The publication of manuscripts is subject to the approval of the Editor who has knowledge of the field discussed in the manuscript in accordance with the principles of Peer Review; referees will be selected from the Editorial Board or among qualified scientists of the international scientific community. Articles must be written in English and must adhere to the guidelines and details contained in the Instructions to Authors.
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