Guillot-Valdés María, Guillén-Riquelme Alejandro, Buela-Casal Gualberto
Universidad de La Laguna, Spain.
Mind, Brain and Behavior Research Center, Universidad de Granada, Spain.
Int J Clin Health Psychol. 2019 Sep;19(3):243-250. doi: 10.1016/j.ijchp.2019.07.002. Epub 2019 Aug 12.
Depressive disorders have a high prevalence around the world. They present a great comorbidity with other disorders like anxiety, thereby making a differential diagnosis very difficult. The Basic Depression Questionnaire was designed to palliate this issue by isolating specific depression symptoms. Our aim is to study the reliability, factorial structure, and differential item functioning of this questionnaire.
The sample consisted of 1,397 adults without psychological problems ( = 29.76, = 11.25, 64.78% women) who completed the CBD.
We observed that none of the items presented differential functioning. A monofactorial structure was established. In this model a good fit was obtained by confirmatory factor analysis and a strict invariance by sex. The ordinal alpha was used to check the reliability and it fetched an index of .95.
The Basic Depression Questionnaire has adequate psychometric properties. The absence of differential item functioning and the invariance by sex are guarantees of an adequate use to diagnose depression for men and women. So, its clinical use can help to differentiate between the specific diagnoses for depressive disorders and anxiety disorders.
抑郁症在全球范围内具有较高的患病率。它与焦虑症等其他疾病存在高度共病性，因此进行鉴别诊断非常困难。基本抑郁问卷旨在通过分离特定的抑郁症状来缓解这一问题。我们的目的是研究该问卷的信度、因子结构和项目功能差异。
样本包括1397名无心理问题的成年人（平均年龄=29.76岁，标准差=11.25岁，64.78%为女性），他们完成了基本抑郁问卷（CBD）。
我们观察到所有项目均未呈现功能差异。建立了单因素结构。在该模型中，通过验证性因子分析获得了良好的拟合度，且按性别具有严格不变性。使用顺序α系数来检验信度，其得出的指数为0.95。
基本抑郁问卷具有足够的心理测量学特性。项目功能无差异以及按性别不变性保证了其在诊断男性和女性抑郁症时的充分适用性。因此，其临床应用有助于区分抑郁症和焦虑症的具体诊断。
