Prevalence of anxiety in patients with an implantable cardioverter defibrillator: measurement equivalence of the HADS-A and the STAI-S
Prevalence of anxiety in patients with an implantable cardioverter defibrillator: measurement equivalence of the HADS-A and the STAI-S
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DOI：
10.1007/s11136-019-02237-2
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发表时间：
2019-11-01
影响因子：
3.5
通讯作者：
Pedersen, S. S.
中科院分区：
文献类型：
--
作者：
Emons, W. H.;Habibovic, M.;Pedersen, S. S.
目的医院焦虑抑郁量表（HADS-A）和状态-特质焦虑量表（STAI-S）是常用的焦虑评估工具，它们被认为是可以互换的，但它们的等效性尚不清楚。因此，我们研究了这两种工具是否（i）在确定可能的临床焦虑水平的患病率方面是等同的，以及（ii）反映了共同焦虑属性的变化。方法分别采用等百分位数等值法和双因素模型法评价评分和结构一致性。本研究使用了来自WEBCARE试验和MIDAS研究的次要数据，其中首次植入植入式心律转复除颤器的患者在植入后10天内完成了HADS-A和STAI-S。结果710例患者的数据纳入分析。结果显示，STAI-S的患病率高于HADS-A（39%对23%）。分别用HADS-A和STAI-S的等效分数和截止值生成人行横道表。双因子分析表明，HADS-A和STAI-S在很大程度上利用了相同的一般焦虑属性。结论STAI-S和HADS-A反映了一种共同的焦虑属性，但使用各自措施的推荐截止评分显示出非常不同的患病率，并将患者分类为焦虑与STAI-S谁不会被确定为这样的HADS-A。临床医生和研究人员在使用这些指标进行筛查和确定可能的临床焦虑水平的患病率时，应该意识到这种不等效性。
Purpose The Hospital Anxiety and Depression Scale (HADS-A) and State-Trait Anxiety Inventory (STAI-S) are popular instruments for assessing anxiety and are considered interchangeable, although little is known about their equivalence. Hence, we examined whether the two instruments are (i) equivalent with respect to determining the prevalence of probable clinical anxiety levels and (ii) reflect variation on a common anxiety attribute. Methods Score and construct concordance were evaluated using equipercentile equating and bifactor modeling, respectively. Secondary data from the WEBCARE trial and the MIDAS study were used for the current study, where patients implanted with a first-time implantable cardioverter defibrillator completed both the HADS-A and the STAI-S within 10 days post implant. Results Data from 710 patients were included in the analyses. Results showed that the STAI-S produced a higher prevalence rate than the HADS-A (39% vs. 23%). A crosswalk table was generated with equivalent scores and cutoffs for the HADS-A and STAI-S, respectively. Bifactoring suggested that HADS-A and STAI-S largely tapped into the same generic anxiety attributes. Conclusions STAI-S and HADS-A reflect a common anxiety attribute, but using the recommended cutoff scores on the respective measures show very different prevalence rates and would classify patients as anxious with the STAI-S who would not be identified as such with the HADS-A. Clinicians and researchers should be aware of the inequivalence when using these measures for screening and determining the prevalence of probable clinical anxiety levels.