Department of Physiotherapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Department of Anatomy, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran; Student Research Committee, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
J Bodyw Mov Ther. 2021 Oct;28:323-331. doi: 10.1016/j.jbmt.2021.06.002. Epub 2021 Jun 12.
The Brief Illness Perception Questionnaire (BIPQ) is an instrument for assessing the illness perception. Illness perception varies between individuals based on their health status. There is no study that assess the psychometric properties of the Persian version of BIPQ in neck pain patients. The goal of this study was to evaluate the reliability, construct validity, and exploratory factor analysis of the Persian BIPQ in individuals with non-specific chronic neck pain.
This is a cross-sectional study in which 123 individuals with non-specific chronic neck pain participated. 60 participants examined after 7 days for testing reliability. Reliability was assessed by intra-class correlation coefficient, standard error of measurement, and minimal detectable change. For assessing construct validity and item-total correlation, correlation tests were used. Also, exploratory factor analysis was done to assess the factor structure of the BIPQ.
Exploratory factor analysis' results showed that there were 2 factors with Eigenvalues >1. Factor 1 included "identity", "consequence", "timeline", and "emotional response". Factor 2 consisted of "coherence" and "treatment control". The intra-class correlation coefficient and the cronbach's alpha for the total score was 0.8 and 0.86 respectively. Results of correlation tests showed an acceptable construct validity except with SF-12 mental component. Item-total correlation tests demonstrated that the correlations were above 0.3 for all subscales except for "treatment control" and "coherence".
BIPQ has an acceptable properties to assess illness perception in individuals with non-specific chronic neck pain. The results of exploratory factor analysis and item-total correlation confirmed that 2-subscale version is more acceptable.
Brief Illness Perception Questionnaire（BIPQ）是一种评估疾病认知的工具。个体的疾病认知会因其健康状况而有所不同。目前尚无研究评估 BIPQ 波斯语版本在颈痛患者中的心理测量特性。本研究的目的是评估非特异性慢性颈痛患者 BIPQ 波斯语版本的信度、结构效度和探索性因子分析。
这是一项横断面研究，共纳入 123 名非特异性慢性颈痛患者。其中 60 名患者在 7 天后进行了复测以评估信度。信度评估采用组内相关系数、测量误差和最小可检测变化。为评估结构效度和条目总分相关性，采用相关检验。同时，还进行了探索性因子分析以评估 BIPQ 的因子结构。
探索性因子分析结果显示，存在 2 个特征值>1 的因子。因子 1 包括“身份”、“后果”、“时间线”和“情绪反应”。因子 2 由“连贯性”和“治疗控制”组成。总分的组内相关系数和克朗巴赫α系数分别为 0.8 和 0.86。相关检验结果显示，除 SF-12 心理成分外，结构效度可接受。条目总分相关性检验显示，除“治疗控制”和“连贯性”外，所有子量表的相关性均大于 0.3。
BIPQ 具有评估非特异性慢性颈痛患者疾病认知的可接受特性。探索性因子分析和条目总分相关性的结果证实，2 分量表版本更具可接受性。
