King Fahid Specialty Hospital, Dammam, Saudi Arabia.
J Cardiovasc Nurs. 2010 Mar-Apr;25(2):117-23. doi: 10.1097/JCN.0b013e3181b56626.
: Anxiety is not routinely assessed in patients hospitalized for acute myocardial infarction (AMI). Failure to identify and treat patients who are anxious after AMI makes them more vulnerable to the adverse effects of anxiety, including higher complication rates. The anxiety subscale of the Brief Symptom Inventory (BSI) is a simple, reliable measure of anxiety with minimal patient burden. However, there is limited evidence of reliability and validity of the BSI as a measure of anxiety in patients hospitalized for AMI.
: The aim of this study was to provide evidence for the reliability and validity of the BSI in hospitalized AMI patients.
: A total of 536 patients admitted for AMI (62 +/- 14 years of age, 66% men, 85% white, 27% with previous myocardial infarction) completed the BSI and the state portion of the State Anxiety Inventory (SAI) within 72 hours of admission. Internal consistency reliability, criterion-related validity, and construct validity of the BSI were tested.
: There was sufficient evidence of internal consistency (Cronbach alpha = .87), which supported the reliability of the BSI. There was evidence of criterion-related validity based on the Spearman rho correlation coefficient of 0.70 (P < .001) between BSI and SAI scores. Anxious patients had higher complication rates than did nonanxious patients (BSI, 1.31 +/- 0.13 vs 0.82 +/- 0.08, respectively, P < .001; SAI, 1.34 +/- 0.13 vs 0.80 +/- 0.07, respectively, P < .001), demonstrating adequate construct validity. In a logistic regression, BSI scores were independent predictors of in-hospital complications after controlling for sociodemographic and clinical variables, which further supported construct validity.
: These results provide support for the BSI as a reliable, valid instrument for measuring anxiety in patients hospitalized for AMI.
焦虑症在因急性心肌梗死（AMI）住院的患者中并未常规评估。未能识别和治疗 AMI 后焦虑的患者会使他们更容易受到焦虑的不良影响，包括更高的并发症发生率。简明症状量表（BSI）的焦虑分量表是一种简单、可靠的焦虑测量方法，患者负担极小。然而，BSI 作为 AMI 住院患者焦虑测量工具的可靠性和有效性的证据有限。
本研究旨在为 BSI 在 AMI 住院患者中的可靠性和有效性提供证据。
共有 536 名因 AMI 入院的患者（62±14 岁，66%为男性，85%为白人，27%有既往心肌梗死）在入院后 72 小时内完成了 BSI 和状态部分的状态焦虑量表（SAI）。测试了 BSI 的内部一致性、效标关联效度和结构效度。
有充分的证据表明内部一致性（Cronbach α=0.87），这支持了 BSI 的可靠性。根据 BSI 和 SAI 评分之间的 Spearman rho 相关系数 0.70（P<.001），有证据表明效标关联效度。焦虑患者的并发症发生率高于非焦虑患者（BSI，1.31±0.13 与 0.82±0.08，分别，P<.001；SAI，1.34±0.13 与 0.80±0.07，分别，P<.001），表明具有足够的结构效度。在逻辑回归中，BSI 评分是控制社会人口统计学和临床变量后住院并发症的独立预测因子，进一步支持了结构效度。
这些结果为 BSI 作为一种可靠、有效的 AMI 住院患者焦虑测量工具提供了支持。
