评估一份关于膳食纤维相关知识的问卷在土耳其学生群体中的有效性和可靠性。
Assessing the validity and reliability of a questionnaire on dietary fibre-related knowledge in a Turkish student population.
作者信息
Deniz Melike S, Alsaffar Ayten A
机构信息
Department of Nutrition and Dietetics, Yeditepe University.
School of Applied Sciences, Ozyegin University, Turkey.
出版信息
J Health Popul Nutr. 2013 Dec;31(4):497-503. doi: 10.3329/jhpn.v31i4.20048.
This study aimed to validate a questionnaire on dietary fibre (DF)-related knowledge in a Turkish student population. Participants (n=360) were either undergraduate students who have taken a nutrition course for 14 weeks (n=174) or those in another group who have not taken such a nutrition course (n=186). Test-retest reliability, internal reliability, and construct validity of the questionnaire were determined. Overall internal reliability (Cronbach's alpha=0.90) and test-retest reliability (0.90) were high. Significant differences (p<0.001) between the scores of the two groups of students indicated that the questionnaire had satisfactory construct validity. It was found that one-fifth of the students were unsure of the correct answer for any item, and 52.5% of them were not aware that DF had to be consumed on a daily basis. Only 36.4 to 44.2% of the students were able to correctly identify the food sources of DF.
本研究旨在验证一份关于膳食纤维（DF）相关知识的问卷在土耳其学生群体中的有效性。参与者（n = 360）包括修读了14周营养课程的本科生（n = 174）或未修读此类营养课程的另一组学生（n = 186）。确定了问卷的重测信度、内部信度和结构效度。总体内部信度（Cronbach's alpha = 0.90）和重测信度（0.90）较高。两组学生得分之间的显著差异（p < 0.001）表明问卷具有令人满意的结构效度。结果发现，五分之一的学生对任何一项的正确答案都不确定，其中52.5%的学生不知道必须每天摄入膳食纤维。只有36.4%至44.2%的学生能够正确识别膳食纤维的食物来源。
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