Barber Matthew D, Spino Cathie, Janz Nancy K, Brubaker Linda, Nygaard Ingrid, Nager Charles W, Wheeler Thomas L
Obstetrics, Gynecology, and Women's Health Institute, Cleveland Clinic, Cleveland, OH, USA.
Am J Obstet Gynecol. 2009 May;200(5):580.e1-7. doi: 10.1016/j.ajog.2009.02.007.
We sought to estimate the minimum important difference (MID) for the Urinary Distress Inventory (UDI), UDI-stress subscale of the Pelvic Floor Distress Inventory, and Urinary Impact Questionnaire (UIQ) of the Pelvic Floor Impact Questionnaire.
We calculated MID using anchor- and distribution-based approaches from a randomized trial for nonsurgical stress incontinence treatment. Anchors included a global impression of change, incontinence episodes from a urinary diary, and the Incontinence Severity Index. Effect size and standard error of measurement were the distribution methods used.
Anchor-based MIDs ranged from -22.4 to -6.4 points for the UDI, -16.5 to -4.6 points for the UDI-stress, and -17.0 to -6.5 points for the UIQ. These data were supported by 2 distribution-based estimates.
Reasonable estimates of MID are 11, 8, and 16 points for the UDI, UDI-stress subscale, and UIQ, respectively. Statistically significant improvements that meet these thresholds should be considered clinically important.
我们试图评估盆底困扰问卷中的排尿困扰量表(UDI)、盆底困扰问卷的压力分量表(UDI-压力)以及盆底影响问卷中的排尿影响问卷(UIQ)的最小重要差异(MID)。
我们采用基于锚定法和分布法,从一项非手术压力性尿失禁治疗的随机试验中计算MID。锚定指标包括整体变化印象、排尿日记中的尿失禁发作次数以及尿失禁严重程度指数。效应大小和测量标准误是所使用的分布方法。
基于锚定法的MID,UDI为-22.4至-6.4分,UDI-压力为-16.5至-4.6分,UIQ为-17.0至-6.5分。这些数据得到了两种基于分布法的估计值的支持。
UDI、UDI-压力分量表和UIQ的MID合理估计值分别为11分、8分和16分。达到这些阈值的具有统计学意义的改善应被视为具有临床重要性。