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Reliability and validity of a fruit and vegetable self-efficacy instrument for secondary-school students in the Netherlands?

机译：荷兰中学生使用果蔬自我效能测验工具的信度和效度？

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ObjectiveTo develop a a€?fruit self-efficacya€? (FSE) instrument and a a€?vegetable self-efficacya€? (VSE) instrument for secondary-school students in the Netherlands and to test the reliability and validity of these instruments.DesignMethodological research.SettingSeven secondary schools in the Netherlands.SubjectsStudents (11a€“19 years of age) completed the two instruments in the classroom (n 466). Out of the original subject group, 106 students completed the instruments a second time.ResultsThe relevance of the twenty-two items of the two developed instruments was evaluated on two occasions by four experts. This procedure resulted in seventeen items for both instruments. Further analysis was carried out on the basis of the secondary-school studentsa€? answers. Factor analysis identified two unidimensional instruments. Cronbach's ?± was 0?·94 for the FSE instrument and 0?·95 for the VSE instrument. The intra-class correlation coefficient between the test and the retest for both instruments varied between 0?·33 and 0?·84 (P < 0?·05), depending on how the tests were taken (during class or on the student's own initiative), and the order in which the tests were completed (started or finished with a different instrument used for similar research). The correlation between FSE and fruit consumption was 0?·41 (P < 0?·01) and between VSE and vegetable consumption was 0?·32 (P < 0?·01).ConclusionsThe two instruments are sufficiently reliable and valid to assess the FSE and VSE of secondary-school students in the Netherlands. Further research, in which the predominant ethnic minorities in the Netherlands are sufficiently represented, is required to confirm this conclusion.
机译：目的发展一种水果自我效能感（FSE）工具和“蔬菜自我效能感” （VSE）仪器，用于荷兰的中学生，并测试这些仪器的可靠性和有效性。设计方法研究。设置荷兰的7所中学。受试者（11岁至19岁的学生）在课堂上完成了这两种仪器的测试（n 466）。在原始学科组中，有106名学生第二次完成了乐器。结果由四位专家两次评估了两个已开发乐器中22个项目的相关性。此过程为这两种仪器生成了17个项目。在中学生的基础上进行了进一步分析。答案。因子分析确定了两种一维仪器。对于FSE仪器，Cronbach的？±为0？·94，对于VSE仪器，Cronbach的？±为0？·95。两种仪器的测试和复试之间的班内相关系数在0？·33和0？·84（P <0？·05）之间变化，这取决于测试的方式（在上课期间或学生自己进行）主动性），以及测试的完成顺序（以用于类似研究的其他仪器开始或完成）。 FSE与水果消费之间的相关性为0？·41（P <0？·01），VSE与蔬菜消费之间的相关性为0？·32（P <0？·01）。结论这两种工具足够可靠且有效地用于评估荷兰中学生的FSE和VSE。需要进一步的研究来证实这一结论，在荷兰的少数民族中有足够的代表性。

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