Universidad de Oviedo.
Psicothema. 2018 Feb;30(1):116-122. doi: 10.7334/psicothema2017.269.
The aim ofthis study was to explore the psychometric properties of the Motiva.Diaf-DM2 questionnaire, which assesses adherence to a healthy diet and physical activity in patients with Type 2 Diabetes (T2D).
Participants were 206 patients who attended primary care services, with a mean age of 69.63 years (SD = 11.05), with 39.3% of the participants being women. To assess the test-retest reliability of the measure, a random subsample (n = 40) of patients who had another appointment scheduled was selected to fill in the questionnaire once again two weeks after the initial administration.
The reliability of the scores was found to be appropriate both in terms of internal consistency (α first factor = .756; α second factor = .821) and temporal stability (r first factor = .604; r second factor = .638). The structure of the test is two-dimensional. The scores for the second dimension (adherence to physical activity) are in agreement with the scores for basic psychological needs (r physical activity = .281), resilience (r = .216), and glycated haemoglobin (r = -.182).
The Motiva.Diaf-DM2 test was shown to have the appropriate relia-bility and validity to assess adherence to a healthy diet and physical activity in patients diagnosed with T2D.
本研究旨在探讨 Motiva.Diaf-DM2 问卷的心理测量特性，该问卷评估 2 型糖尿病（T2D）患者对健康饮食和体育活动的依从性。
参与者为 206 名在初级保健服务就诊的患者，平均年龄为 69.63 岁（SD = 11.05），其中 39.3%的参与者为女性。为了评估该测量的重测信度，从有另一个预约安排的患者中随机抽取了 40 名（n = 40）作为随机样本，要求他们在初始给药两周后再次填写问卷。
在内部一致性方面（第一因素 α =.756；第二因素 α =.821）和时间稳定性（第一因素 r =.604；第二因素 r =.638），分数的可靠性被认为是适当的。测试的结构是二维的。第二维度（对体育活动的依从性）的分数与基本心理需求（r 体育活动 =.281）、适应力（r =.216）和糖化血红蛋白（r = -.182）的分数一致。
Motiva.Diaf-DM2 测试具有适当的可靠性和有效性，可用于评估诊断为 T2D 的患者对健康饮食和体育活动的依从性。
