VA New York Harbor Healthcare System, New York, NY, USA; David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
VA New York Harbor Healthcare System, New York, NY, USA; Northcentral University, La Jolla, CA, USA.
Patient Educ Couns. 2021 Jul;104(7):1781-1788. doi: 10.1016/j.pec.2020.12.029. Epub 2021 Jan 4.
To establish the reliability and validity of a self-report measure designed to assess self-efficacy for hypertension treatment adherence.
This investigation was embedded within a six-month randomized clinical trial (RCT), which demonstrated that a tailored, stage-matched intervention was more effective at improving hypertension control than usual care among individuals (n = 533) with repeated uncontrolled hypertension. The instrument used to assess self-efficacy for hypertension treatment adherence (SE-HTA) comprised three subscales that assessed diet self-efficacy (DSE), exercise self-efficacy (ESE), and medication self-efficacy (MSE). To determine SE-HTA validity and reliability, we assessed internal consistency using Cronbach's α coefficients, conducted exploratory factor analysis, and evaluated convergent and discriminant validity, as well as test-retest reliability using Spearman's ρ correlation coefficients.
Cronbach's α (internal consistency) values for DSE, ESE, and MSE were 0.81, 0.82 and 0.74. Factor analysis and the scree plot demonstrated three distinct factors, which correspond to the three subscales contained in the SE-HTA instrument. SE-HTA possessed good convergent and discriminant validity, and moderate test-retest reliability.
The SE-HTA instrument containing diet, exercise, and medication adherence subscales is valid and reliable in adults with uncontrolled hypertension.
This SE-HTA instrument measures self-efficacy and could help facilitate behavior change in hypertension.
建立一种评估高血压治疗依从性自我效能的自评量表的信度和效度。
本研究嵌入在一项为期六个月的随机临床试验（RCT）中，该 RCT 表明，与常规护理相比，针对特定个体、匹配阶段的干预措施更能有效控制高血压，该 RCT 纳入了（n=533）多次血压控制不佳的患者。用于评估高血压治疗依从性自我效能的工具（SE-HTA）由三个子量表组成，分别评估饮食自我效能（DSE）、运动自我效能（ESE）和药物自我效能（MSE）。为了确定 SE-HTA 的有效性和可靠性，我们使用 Cronbach's α 系数评估内部一致性，进行探索性因子分析，并评估收敛和判别效度，以及使用 Spearman's ρ 相关系数评估测试-重测信度。
DSE、ESE 和 MSE 的 Cronbach's α（内部一致性）值分别为 0.81、0.82 和 0.74。因子分析和碎石图表明存在三个不同的因子，与 SE-HTA 工具中包含的三个子量表相对应。SE-HTA 具有良好的收敛和判别效度，以及中等的测试-重测信度。
包含饮食、运动和药物依从性子量表的 SE-HTA 工具在未控制的高血压成年人中是有效和可靠的。
该 SE-HTA 工具可测量自我效能，并有助于促进高血压患者的行为改变。
