Kelishadi Roya, Majdzadeh Reza, Motlagh Mohammad-Esmaeil, Heshmat Ramin, Aminaee Tahereh, Ardalan Gelayol, Esmaillzadeh Ahmad, Azadbakht Leila, Poursafa Parinaz, Movahedian Mahsa, Baraz Shahram
Pediatrics Department, Child Growth and Development Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Int J Prev Med. 2012 Oct;3(10):699-705.
Little experience exists on valid and reliable tools for assessment of the determinants of underweight and overweight in children and adolescents living in the Middle-East and North Africa (MENA). This study aimed to develop a valid and wideranging questionnaire for assessment of these parameters in a nationwide sample of Iranian children and adolescents.
This national study was conducted in 31 provinces in Iran. The first phase consisted of focus group discussion with 275 children and adolescents and their parents. After a qualitative content analysis, the initial items were extracted. In the next step, the face validity was assessed by expert panelists using the quantitative method of the Impact Score. To assess the content validity, the content validity rate (CVR) and the content validity index (CVI) were determined. The internal consistency was examined by Cronbach alpha, and its test-retest reliability was determined. The socio-demographic variables, perinatal factors, lifestyle factors, family history, knowledge and attitude were assessed. Dietary intakes were assessed by a validated 168-item semi-quantitative food frequency questionnaire. A validated questionnaire for quality of life was filled in anonymously.
A team of expert researchers conducted the data analysis of 576 interviews by using qualitative content analysis method. The analysis process began by determining the semantic units about the concepts studied. The initial questionnaire was developed in four domains by including Likert scale questions. In the face validity step, all questions of the primary questionnaire obtained a score of more than 1.5. In the phase of CVR assessment, 6 questions obtained a score of less than 0.62, and were omitted. The rest of questions were assessed for CVI, and got a score of more than 0.75. Cronbach's alpha coefficient of the whole questionnaire was 0.97, and the Pearson correlation coefficient of the test-retest phase was 0.94.
The developed questionnaire is a valid and reliable tool for assessment of the determinants of weight disorders in a nationally representative sample of children and adolescents in the MENA.
在中东和北非（MENA）地区，用于评估儿童和青少年体重过轻及超重决定因素的有效且可靠的工具经验有限。本研究旨在开发一份有效且全面的问卷，用于在伊朗全国范围内的儿童和青少年样本中评估这些参数。
这项全国性研究在伊朗的31个省份开展。第一阶段包括与275名儿童、青少年及其父母进行焦点小组讨论。经过定性内容分析后，提取初始项目。下一步，专家小组成员使用影响得分的定量方法评估表面效度。为评估内容效度，确定了内容效度率（CVR）和内容效度指数（CVI）。通过克朗巴哈α系数检验内部一致性，并确定其重测信度。评估了社会人口统计学变量、围产期因素、生活方式因素、家族史、知识和态度。通过一份经验证的168项半定量食物频率问卷评估饮食摄入量。一份经验证的生活质量问卷由参与者匿名填写。
一组专家研究人员采用定性内容分析方法对576次访谈进行了数据分析。分析过程始于确定所研究概念的语义单元。初始问卷通过纳入李克特量表问题在四个领域中编制而成。在表面效度步骤中，初始问卷的所有问题得分均超过1.5。在CVR评估阶段，6个问题得分低于0.62，被剔除。其余问题进行CVI评估，得分超过0.75。整个问卷的克朗巴哈α系数为0.97，重测阶段的皮尔逊相关系数为0.94。
所开发的问卷是一种有效且可靠的工具，可用于在MENA地区具有全国代表性的儿童和青少年样本中评估体重紊乱的决定因素。
