Deyaert J, Harms T, Weenas D, Gershuny J, Glorieux I
Research group TOR, Department of Sociology, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium.
Centre for Time Use Research (CTUR), Department of Sociology, University of Oxford, 74 Woodstock Road, Oxford, OX2 6HP, UK.
BMC Public Health. 2017 Jul 3;17(1):620. doi: 10.1186/s12889-017-4546-7.
Traditionally, time-use data have been used to inform a broad range of economic and sociological research topics. One of the new areas in time-use research is the study of physical activity (PA) and physical activity energy expenditure (PAEE). Time-use data can be used to study PAEE by assigning MET values to daily activities using the Ainsworth Compendium of Physical Activities. Although most diarists record their daily activities accurately and in detail, they are only required to record their paid working hours, not the job-specific tasks they undertake. This makes it difficult to assign MET values to paid work episodes.
In this methodological paper, we explain how we addressed this problem by using the detailed information about respondents' occupational status included in time-use survey household and individual questionnaires. We used the 2008 ISCO manual, a lexicon of the International Labour Organization of occupational titles and their related job-specific tasks. We first assigned a MET value to job-specific tasks using the Ainsworth compendium (2011) then calculated MET values for each of the 436 occupations in the ISCO-08 manual by averaging all job-specific MET values for each occupation.
The ISCO-08 Major Groups of 'elementary occupations' and 'craft and related trades workers' are associated with high PAEE variation in terms of their job-specific MET values and together represented 21.6% of the Belgian working population in 2013. We recommend that these occupational categories should be prioritised for further in-depth research into occupational activity (OA).
We developed a clear and replicable procedure to calculate occupational activity for all ISCO-08 occupations. All of our calculations are attached to this manuscript which other researchers may use, replicate and refine.
传统上，时间使用数据一直被用于为广泛的经济和社会学研究主题提供信息。时间使用研究的新领域之一是身体活动（PA）和身体活动能量消耗（PAEE）的研究。通过使用《安斯沃思身体活动纲要》为日常活动分配代谢当量（MET）值，时间使用数据可用于研究PAEE。尽管大多数日记记录者会准确详细地记录他们的日常活动，但他们只需要记录带薪工作时间，而不需要记录他们从事的具体工作任务。这使得难以给带薪工作时段分配MET值。
在这篇方法学论文中，我们解释了我们如何通过使用时间使用调查家庭和个人问卷中包含的关于受访者职业状况的详细信息来解决这个问题。我们使用了2008年国际标准职业分类手册，这是国际劳工组织的职业头衔及其相关具体工作任务的词汇表。我们首先使用《安斯沃思纲要》（2011年）为具体工作任务分配一个MET值，然后通过对国际标准职业分类-08手册中436种职业的每种职业的所有具体工作任务MET值求平均值，计算出这些职业的MET值。
国际标准职业分类-08中的“初等职业”和“工艺及相关行业工人”主要组在其具体工作任务的MET值方面与高PAEE变化相关，并且在2013年共同占比利时劳动人口的21.6%。我们建议应优先对这些职业类别进行关于职业活动（OA）的进一步深入研究。
我们开发了一个清晰且可重复的程序来计算国际标准职业分类-08所有职业的职业活动。我们所有的计算都附在本手稿中，其他研究人员可以使用、复制和完善。
