SAS交互式矩阵语言在膳食调查营养素数据处理中的应用

doi:10.3969/j.issn.1006-5253.2022.02.015

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Abstract Objective To introduce the calculation of nutrient intake based on SAS interactive matrix language for semi-quantitative food frequency questionnaire (SQFFQ) and its application in nutritional epidemiological dietary investigation.Methods Three thousand women who completed SQFFQ were randomly selected from a large-scale birth defect investigation dataset in Shaanxi Province as a training dataset using the simple random sampling method by PROC SURVEYSELECT program with SAS 9.4. Next, the interactive matrix language PROC IML programming was used to demonstrate the calculation of SQFFQ nutrient intake.Results According to the principle of matrix operation, PROC IML was used to obtain the calculation module and 3 000 samples were validated to obtain 25 nutrients intake. Meanwhile, in the SAS log output window, the execution time of the PROC IML process was 0.59 s, which was efficient and fast.Conclusion The SAS interactive matrix language was used to calculate the nutrient intake of SQFFQ with high efficiency, simplicity and accuracy, which was suitable for SQFFQ analysis.

Key words： SAS interactive matrix language semi-quantitative food frequency questionnaire nutrient

Received: 31 July 2021

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	Articles by authors
	Zhang Binyan
	Mi Baibing
	Wang Yutong
	Liu Huimeng
	Dang Shaonong
	Yan Hong

Cite this article:

Zhang Binyan,Mi Baibing,Wang Yutong, et al. Application of SAS interactive matrix language in the nutrient data processing of dietary investigation[J]. journal1, 2022, 29(2): 150-155.

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http://manu58.magtech.com.cn/Jwk_zgyytj/EN/10.3969/j.issn.1006-5253.2022.02.015 OR http://manu58.magtech.com.cn/Jwk_zgyytj/EN/Y2022/V29/I2/150

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