Solhi Mahnaz, Heydari Esmat, Janani Leila, Farzadkia Mahdi
Department of Health Education and Health Promotion, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
J Egypt Public Health Assoc. 2021 Oct 26;96(1):28. doi: 10.1186/s42506-021-00090-1.
Assessment of benefits and barriers of waste separation at source is necessary to identify the effective factors in this field. This study aims at designing and validation of a questionnaire assessing the barriers and benefits of waste separation at source from the viewpoint of women based on the community-based social marketing model in Genaveh Township, Bushehr, Iran METHODS: In phase 1, a literature review and focus group discussion were conducted to identify the barriers and benefits of waste separation at the source and to design the items and questionnaires. In phase 2, a psychometric evaluation was performed, including face validity, content validity, structural validity, and reliability. Data were analyzed by SPSS and R software.
Out of 56 initial items, seven items with the content validity ratio less than 0.56 were removed, and one with the content validity index less than 0.79 was reviewed. Content validity ratio of the questionnaire was 0.782 and content validity index 0.957. The results of exploratory factor analysis showed that the five and seven-factor models showed good fit. Considering the possible existence of some items in several factors, confirmatory factor analysis was used in the next step. Finally, two items were removed and two others were displaced. The reliability of the instrument was confirmed by internal consistency (α = 0.92) and its stability by the test-retest (ICC = 0.83).
The valid and reliable 48-item questionnaire is a suitable instrument for assessing the barriers and benefits of waste separation at source from the viewpoint of women based on the community-based social marketing model in Genaveh Township, Bushehr.
评估源头垃圾分类的益处和障碍对于确定该领域的有效因素至关重要。本研究旨在设计并验证一份问卷，该问卷基于伊朗布什尔省格纳韦镇的社区社会营销模式，从女性视角评估源头垃圾分类的障碍和益处。方法：在第一阶段，进行了文献综述和焦点小组讨论，以确定源头垃圾分类的障碍和益处，并设计问卷项目。在第二阶段，进行了心理测量学评估，包括表面效度、内容效度、结构效度和信度。数据通过SPSS和R软件进行分析。结果：在56个初始项目中，删除了7个内容效度比小于0.56的项目，并对1个内容效度指数小于0.79的项目进行了审查。问卷的内容效度比为0.782，内容效度指数为0.957。探索性因子分析结果表明，五因素和七因素模型拟合良好。考虑到某些项目可能存在于多个因素中，下一步使用验证性因子分析。最后，删除了2个项目，替换了另外2个项目。该工具的信度通过内部一致性得到证实（α = 0.92），其稳定性通过重测得到证实（ICC = 0.83）。结论：这份有效且可靠的48项问卷是基于伊朗布什尔省格纳韦镇的社区社会营销模式，从女性视角评估源头垃圾分类的障碍和益处的合适工具。
