Health and Social Care Institute, Teesside University, Middlesbrough, Tees Valley, United Kingdom.
Hochschule für Gesundheit, Department of Applied Health Sciences, Bochum, Germany.
PLoS One. 2018 Oct 4;13(10):e0205244. doi: 10.1371/journal.pone.0205244. eCollection 2018.
The Fremantle Back Awareness Questionnaire (FreBAQ) claims to assess disrupted self-perception of the back. The aim of this study was to develop a German version of the FreBAQ (FreBAQ-G) and assess its test-retest reliability, its known-groups validity and its convergent validity with another purported measure of back perception.
The FreBaQ-G was translated following international guidelines for the transcultural adaptation of questionnaires. Thirty-five patients with non-specific CLBP and 48 healthy participants were recruited. Assessor one administered the FreBAQ-G to each patient with CLBP on two separate days to quantify intra-observer reliability. Assessor two administered the FreBaQ-G to each patient on day 1. The scores were compared to those obtained by assessor one on day 1 to assess inter-observer reliability. Known-groups validity was quantified by comparing the FreBAQ-G score between patients and healthy controls. To assess convergent validity, patient's FreBAQ-G scores were correlated to their two-point discrimination (TPD) scores.
Intra- and Inter-observer reliability were both moderate with ICC3.1 = 0.88 (95%CI: 0.77 to 0.94) and 0.89 (95%CI: 0.79 to 0.94), respectively. Intra- and inter-observer limits of agreement (LoA) were 6.2 (95%CI: 5.0-8.1) and 6.0 (4.8-7.8), respectively. The adjusted mean difference between patients and controls was 5.4 (95%CI: 3.0 to 7.8, p<0.01). Patient's FreBAQ-G scores were not associated with TPD thresholds (Pearson's r = -0.05, p = 0.79).
The FreBAQ-G demonstrated a degree of reliability and known-groups validity. Interpretation of patient level data should be performed with caution because the LoA were substantial. It did not demonstrate convergent validity against TPD. Floor effects of some items of the FreBAQ-G may have influenced the validity and reliability results. The clinimetric properties of the FreBAQ-G require further investigation as a simple measure of disrupted self-perception of the back before firm recommendations on its use can be made.
弗雷曼特尔背部意识问卷（FreBAQ）声称可评估背部自我感知的中断。本研究的目的是开发弗雷曼特尔背部意识问卷的德文版（FreBAQ-G），并评估其重测信度、已知组有效性以及与另一种据称的背部感知测量方法的相关性。
根据问卷跨文化适应的国际准则对 FreBaQ-G 进行翻译。招募了 35 名非特异性慢性下腰痛患者和 48 名健康参与者。评估员 1 在两天内分别对每位 CLBP 患者进行 FreBAQ-G 评估，以量化内部观察者的可靠性。评估员 2 在第 1 天对每位患者进行 FreBAQ-G 评估。将评分与评估员 1 在第 1 天获得的评分进行比较，以评估内部观察者之间的可靠性。通过比较患者和健康对照组之间的 FreBAQ-G 评分来评估已知组的有效性。为了评估相关性，将患者的 FreBAQ-G 评分与他们的两点辨别阈值（TPD）评分相关联。
内部和内部观察者的可靠性均为中度，ICC3.1=0.88（95%CI：0.77 至 0.94）和 0.89（95%CI：0.79 至 0.94）。内部和内部观察者的一致性限（LoA）分别为 6.2（95%CI：5.0-8.1）和 6.0（4.8-7.8）。患者与对照组之间的调整平均差异为 5.4（95%CI：3.0 至 7.8，p<0.01）。患者的 FreBAQ-G 评分与 TPD 阈值无关（皮尔逊 r=-0.05，p=0.79）。
FreBAQ-G 表现出一定程度的可靠性和已知组有效性。由于一致性限较大，因此应谨慎解释患者水平数据。它没有表现出与 TPD 的相关性。FreBAQ-G 的一些项目可能存在地板效应，这可能会影响有效性和可靠性结果。在对其使用提出明确建议之前，需要进一步研究 FreBAQ-G 的临床测量特性，以作为背部自我感知中断的简单测量方法。
