Department of Orthopaedics, Clinical Sciences Lund, Lund University, Lund, Sweden.
Arch Phys Med Rehabil. 2012 Dec;93(12):2210-5. doi: 10.1016/j.apmr.2012.04.020. Epub 2012 Apr 30.
To investigate the validity over time of the fingertip-to-floor test (FTF) and the straight leg raising test (SLR) using the Roland Morris Disability Questionnaire (RMDQ) and correlation coefficient (r), and to assess the predictive value of factors related to the change in RMDQ over 12 months using multivariate regression analysis.
Longitudinal study.
Outpatient physical therapy clinic.
Subjects (N=65) with acute/subacute low back pain (≤13 wk of symptoms). Thirty-eight (58%) had radicular pain as determined by the slump test.
Not applicable.
Self-reported disability was used as a reference variable and was measured using the RMDQ at baseline and after 1 and 12 months. The FTF and SLR were measured at baseline and after 1 month. Responsiveness and imprecision were assessed by using effect size (ES) and minimal detectable change (MDC). The sample was stratified by the presence or absence of radicular pain (categorized by the slump test).
The change in FTF results was significantly correlated to the 1-month change in RMDQ, both in the entire sample (r=.63) and in the group with radicular pain (r=.66). Similar analysis for the SLR showed a weak relationship to RMDQ. FTF showed adequate responsiveness (ES range, 0.8-0.9) in contrast to SLR (ES range, 0.2-0.5). The MDC for FTF and SLR were 4.5 cm and 5.7°, respectively. The change in FTF results over 1 month was independently more strongly associated with the 12-month (R(2)=.27-.31) change in RMDQ than any of the other variables and multivariate combinations.
Our results suggest that the FTF has good validity in patients with acute/subacute low back pain and even better validity in those with radicular pain. The change in FTF results over the first month was a valid predictor of the change in self-reported disability over 1 year. In contrast, the validity of SLR can be questioned in the present group of patients.
使用 Roland Morris 残疾问卷（RMDQ）和相关系数（r）研究指尖到地板测试（FTF）和直腿抬高测试（SLR）随时间的有效性，并使用多元回归分析评估与 RMDQ 在 12 个月内变化相关的因素的预测价值。
纵向研究。
门诊物理治疗诊所。
患有急性/亚急性腰痛（症状≤13 周）的受试者（N=65）。38 例（58%）根据 slumped 测试确定有神经根痛。
不适用。
自我报告的残疾作为参考变量，使用 RMDQ 在基线和 1 个月和 12 个月后进行测量。在基线和 1 个月后测量 FTF 和 SLR。使用效应量（ES）和最小可检测变化（MDC）评估反应性和不精确性。根据 slumped 测试对神经根痛的存在或不存在对样本进行分层。
FTF 结果的变化与 RMDQ 在 1 个月时的变化显著相关，在整个样本中（r=.63）和在有神经根痛的组中（r=.66）也是如此。对 SLR 的类似分析显示与 RMDQ 呈弱相关。FTF 的反应性较好（ES 范围，0.8-0.9），而 SLR 的反应性较差（ES 范围，0.2-0.5）。FTF 和 SLR 的 MDC 分别为 4.5cm 和 5.7°。在 1 个月内 FTF 结果的变化与 RMDQ 在 12 个月时的变化（R（2）=0.27-0.31）独立相关更强，比任何其他变量和多变量组合都更强。
我们的结果表明，FTF 在急性/亚急性腰痛患者中具有良好的有效性，在有神经根痛的患者中甚至具有更好的有效性。在第一个月内 FTF 结果的变化是自我报告的残疾在 1 年内变化的有效预测指标。相比之下，在目前的患者群体中，SLR 的有效性可能值得怀疑。
