Research Department of Behavioural Science and Health, University College London, London, UK.
Wolfson Institute of Preventive Medicine, Queen Mary University of London, London, UK.
Psychol Health. 2022 Feb;37(2):194-210. doi: 10.1080/08870446.2021.1879806. Epub 2021 Feb 17.
Research implicates psychological factors in low uptake of lung cancer screening. We developed and psychometrically tested a standardised measure of these psychological determinants in preparation for a prospective, longitudinal cohort study of screening uptake.
Leventhal's Common-Sense Model of Self-Regulation of Health and Illness provided the theoretical framework to generate the initial item pool. Items were refined during expert review and cognitive interviews which tested for face validity, redundancy, acceptability and comprehensibility. An online survey piloted the refined pool with 1500 current and former (quit ≤ 15 years) smokers aged 55-80. The response distributions, internal reliability and factor structure determined the final retained constructs. Regression analyses examined these constructs' associations with screening intention, smoking status and demographics.
The final measure included seven factor-derived subscales (consequences, personal control, treatment control, illness coherence, emotional representation, behavioural response and appraisal, risk perception) with Cronbach's alphas ranging from 0.59 to 0.91 and four single-item questions (response efficacy for smoking cessation, treatment intention, perceived stigma and lung cancer survival). Most constructs were associated with smoking status and screening intention (p's < .05).
The Self-Regulatory Questionnaire for Lung Cancer Screening (SRQ-LCS) is an acceptable, reliable and valid measure for investigating the psychological determinants of screening uptake.
研究表明，心理因素会影响肺癌筛查的参与度。我们开发并对这些心理决定因素进行了心理测量学测试，为肺癌筛查参与度的前瞻性纵向队列研究做准备。
莱文索尔的自我调节健康与疾病的通感模型为初始项目池的生成提供了理论框架。在专家审查和认知访谈中对项目进行了细化，以测试其表面效度、冗余度、可接受性和理解度。一项在线调查用 1500 名当前和曾经（戒烟时间≤15 年）的 55-80 岁吸烟者对精炼后的问卷进行了预试验。响应分布、内部可靠性和因素结构确定了最终保留的结构。回归分析检验了这些结构与筛查意向、吸烟状况和人口统计学因素的关联。
最终的测量工具包括七个基于因素的分量表（后果、个人控制、治疗控制、疾病一致性、情绪表达、行为反应和评估、风险感知），克朗巴赫的阿尔法值在 0.59 到 0.91 之间，还有四个单项问题（戒烟的反应效能、治疗意向、感知污名和肺癌生存率）。大多数结构与吸烟状况和筛查意向有关（p 值均<0.05）。
肺癌筛查自我调节问卷（SRQ-LCS）是一种可接受、可靠和有效的测量工具，可用于研究筛查参与度的心理决定因素。
