Schäfer Axel, Wand Benedict M, Lüdtke Kerstin, Ehrenbrusthoff Katja, Schöttker-Königer Thomas
Faculty of Social Work and Health, University of Applied Sciences and Arts (HAWK), Hildesheim, Germany.
School of Physiotherapy, University of Notre Dame Australia, Fremantle, Australia.
BMC Musculoskelet Disord. 2021 Apr 2;22(1):323. doi: 10.1186/s12891-021-04156-1.
Disrupted self-perception of the low back might contribute to chronic non-specific low back pain. The Fremantle back awareness questionnaire is a simple questionnaire to assess back specific self-perception. The questionnaire has recently been translated to German (FreBAQ-G). The aim was to further investigate the psychometric properties of the FreBAQ-G, to evaluate its cross cultural validity in patients with chronic non-specific LBP and to explore potential relationships between body perception, pain, disability and back pain beliefs.
In this cross-sectional multicentre study, sample data were merged with data from the validation sample of the original English version to examine cross-cultural validity. Item Response Theory was used to explore psychometric properties and differential item function (DIF) to evaluate cross-cultural validity and item invariance. Correlations and multiple linear regression analyses were used to explore the relationship between altered back specific self- perception and back pain parameters.
Two hundred seventy-two people with chronic low back pain completed the questionnaires. The FreBAQ-G showed good internal consistency (Cronbach's alpha = 0.84), good overall reliability (r = 0.84) and weak to moderate scalability (Loevinger Hj between 0.34 and 0.48). The questionnaire showed unidimensional properties with factor loadings between 0.57 and 0.80 and at least moderate correlations (r > 0.35) with pain intensity, pain related disability and fear avoidance beliefs (FABQ total - and subscores). Item and test properties of the FreBAQ-G are given. Only item 7 showed uniform DIF indicating acceptable cross-cultural validity.
Our results indicate that the FreBAQ-G is a suitable questionnaire to measure back specific self-perception, and has comparable properties to the English-language version.
对下背部自我认知的紊乱可能导致慢性非特异性下背痛。弗里曼特尔背部认知问卷是一种用于评估背部特定自我认知的简单问卷。该问卷最近已被翻译成德语（FreBAQ-G）。目的是进一步研究FreBAQ-G的心理测量特性，评估其在慢性非特异性下背痛患者中的跨文化效度，并探讨身体认知、疼痛、残疾和背痛信念之间的潜在关系。
在这项横断面多中心研究中，将样本数据与原始英文版验证样本的数据合并，以检验跨文化效度。使用项目反应理论来探索心理测量特性，并使用差异项目功能（DIF）来评估跨文化效度和项目不变性。使用相关性和多元线性回归分析来探索背部特定自我认知改变与背痛参数之间的关系。
272名慢性下背痛患者完成了问卷。FreBAQ-G显示出良好的内部一致性（克朗巴哈系数α = 0.84）、良好的总体信度（r = 0.84）和弱至中度的可扩展性（洛温杰Hj在0.34至0.48之间）。该问卷显示出单维特性，因子载荷在0.57至0.80之间，并且与疼痛强度、疼痛相关残疾和恐惧回避信念（FABQ总分和子分数）至少有中度相关性（r > 0.35）。给出了FreBAQ-G的项目和测试特性。只有第7项显示出一致的DIF，表明具有可接受的跨文化效度。
我们的结果表明，FreBAQ-G是一种适合测量背部特定自我认知的问卷，并且具有与英文版相当的特性。
