Monfre Jill M, Kelechi Teresa J, Magwood Gayenell S, Mueller Martina
Jill M. Monfre, PhD, RN, CWOCN, University of Wisconsin Hospital and Clinics, Madison. Teresa J. Kelechi, PhD, GCNS-BC, CWCN, FAAN, Medical University of South Carolina, Charleston. Gayenell S. Magwood, PhD, RN, Medical University of South Carolina, Charleston. Martina Mueller, PhD, Medical University of South Carolina, Charleston.
J Wound Ostomy Continence Nurs. 2015 Sep-Oct;42(5):474-9. doi: 10.1097/WON.0000000000000160.
The purpose of this study was to conduct validity and reliability testing of a novel quantitative instrument, the Symptom Intrusiveness Rating Scale (SyIRS), developed to assess health-related quality of life (HRQOL) based on individuals' perception of how symptoms associated with a chronic condition affect their quality of life. It was noted in a review of the literature that an instrument focusing on the impact of symptoms of HRQOL that can be used as a subjective assessment tool for all individuals with symptoms related to a chronic condition is currently not available.
Prospective observational study.
The sample was comprised of 50 participants experiencing pain associated with chronic wounds hospitalized in an urban 500-bed acute care hospital in the south central United States.
Cognitive pretesting was conducted to test the construct of the SyIRS. Two experts in the field of HRQOL reviewed and scored statements on the SyIRS based on their relevance to HRQOL. Item-level content validity index (I-CVI) and scale-level content validity index average (S-CVI/Ave) were calculated to assess content validity. Internal consistency was tested using the Cronbach alpha. Test-retest reliability was obtained after administering the SyIRS twice over 2 weeks. The Pearson correlation was used to determine concurrent validity between the SyIRS and the SF-36v2 administered at the same time to confirm HRQOL as the construct on the SyIRS.
Cognitive pretesting indicated that participants interpreted the SyIRS instructions, statements, and response options as intended by the researchers. The SyIRS is a valid and reliable instrument with an S-CVI/Ave = 0.90, indicating the statement in the SyIRS all reflected HRQOL, Cronbach α = 0.904 indicated the instrument has good reliability based on internal consistency. Test-retest of SyIRS showed a strong positive correlation (r = 0.92, P < .005), indicating acceptable test-retest reliability. Correlation between the 2 subscales of SyIRS with SF-36v2 indicated moderate correlation on initial instrument completion (r = -0.56, P < .005, and r = -0.46, P < .001) as well as on the second completion (r = -0.55, P < .005, and r = -0.53, P < .005).
The SyIRS is a valid and reliable instrument to use for assessing HRQOL based on the perceptions of the impact symptoms associated with a chronic condition.
本研究旨在对一种新型定量工具——症状侵扰评定量表（SyIRS）进行效度和信度测试。该量表旨在基于个体对慢性病相关症状如何影响其生活质量的认知，评估健康相关生活质量（HRQOL）。文献综述指出，目前尚无一种专注于症状对HRQOL影响、可作为所有有慢性病相关症状个体主观评估工具的量表。
前瞻性观察性研究。
样本包括在美国中南部一家拥有500张床位的城市急症医院住院的50名患有慢性伤口疼痛的参与者。
进行认知预测试以检验SyIRS的结构。两位HRQOL领域的专家根据陈述与HRQOL的相关性对SyIRS上的陈述进行审查和评分。计算项目级内容效度指数（I-CVI）和量表级内容效度指数平均值（S-CVI/Ave）以评估内容效度。使用Cronbach α检验内部一致性。在两周内对SyIRS进行两次施测以获得重测信度。使用Pearson相关系数确定SyIRS与同时施测的SF-36v2之间的同时效度，以确认SyIRS上的构念为HRQOL。
认知预测试表明，参与者按照研究人员的意图理解了SyIRS的指导语、陈述和回答选项。SyIRS是一种有效且可靠的工具，S-CVI/Ave = 0.90，表明SyIRS中的陈述均反映了HRQOL；Cronbach α = 0.904表明该工具基于内部一致性具有良好的信度。SyIRS的重测显示出强正相关（r = 0.92，P <.005），表明重测信度可接受。SyIRS的两个子量表与SF-36v2之间的相关性表明，在首次完成量表时（r = -0.56，P <.005，r = -0.46，P <.001）以及第二次完成时（r = -0.55，P <.005，r = -0.53，P <.005）均呈中度相关。
SyIRS是一种基于对慢性病相关症状影响的认知来评估HRQOL的有效且可靠的工具。
