Selhorst Mitchell, Metzger Christina, Rice William, Ibinson Brittany, Mansfield Christine
Sports and Orthopedic Physical Therapy, Nationwide Children's Hospital, Columbus, OH.
Spine (Phila Pa 1976). 2025 Sep 1;50(17):E361-E367. doi: 10.1097/BRS.0000000000005169. Epub 2024 Oct 1.
A psychometric study.
To develop a reliable and valid patient-reported outcome measure to assess functional ability in adolescents with low back pain (LBP) using the Rasch model.
LBP is quite common in adolescence. Currently, no method adequately measures the functional ability of adolescents with LBP. Widely used outcome measures for LBP are problematic in adolescents, with significant ceiling/floor effects.
Two hundred adolescents (15.4 ± 1.9 yr; 56% female) with LBP. This study was comprised of two parts: part 1: development of the Youth Back Activity Questionnaire (YouthBAQ) (n = 75), and part 2: psychometric evaluation of the newly designed YouthBAQ using the Rasch model (n = 125). Participants also completed the Oswestry Disability Index (ODI) and Micheli Functional Scale (MFS), data analysis: reliability and construct validity of the YouthBAQ were assessed using Rasch analyses. Correlations with the ODI and MFS were used to determine the convergent validity of the YouthBAQ.
Part 1: Based on the results of the Rasch analysis, 31 items were reduced to 14. Part 2: The 14-item YouthBAQ demonstrated good reliability and construct validity, with good item fit (>0.7 and <1.3), acceptable item hierarchy and spacing, response category functioning, unidimensionality (ratio >3:1), and local independence (<0.30). The MFS demonstrated unacceptable reliability (person reliability = 0.62) and was not compared against the YouthBAQ. The ODI demonstrated acceptable reliability (person reliability = 0.70) but poor construct validity among adolescents with LBP. The YouthBAQ demonstrated a moderate correlation with the ODI ( r = 0.4).
The YouthBAQ is a quick and easily understood measure of function with good validity and reliability in adolescents with LBP. The YouthBAQ is a more appropriate measure of functional ability than the ODI or MFS in this population.
一项心理测量学研究。
使用拉施模型开发一种可靠且有效的患者报告结局测量方法，以评估青少年腰痛（LBP）患者的功能能力。
LBP在青少年中相当常见。目前，尚无方法能充分测量青少年LBP患者的功能能力。广泛使用的LBP结局测量方法在青少年中存在问题，有明显的天花板/地板效应。
200名患有LBP的青少年（15.4±1.9岁；56%为女性）。本研究包括两个部分：第1部分：青少年背部活动问卷（YouthBAQ）的开发（n = 75），第2部分：使用拉施模型对新设计的YouthBAQ进行心理测量学评估（n = 125）。参与者还完成了奥斯维斯特里残疾指数（ODI）和米凯利功能量表（MFS），数据分析：使用拉施分析评估YouthBAQ的信度和结构效度。与ODI和MFS的相关性用于确定YouthBAQ的收敛效度。
第1部分：基于拉施分析结果，31个项目减少到14个。第2部分：14项的YouthBAQ显示出良好的信度和结构效度，具有良好的项目拟合（>0.7且<1.3）、可接受的项目层次和间距、反应类别功能、单维性（比率>3:1）以及局部独立性（<0.30）。MFS显示出不可接受的信度（个人信度 = 0.62），未与YouthBAQ进行比较。ODI显示出可接受的信度（个人信度 = 0.70），但在青少年LBP患者中结构效度较差。YouthBAQ与ODI显示出中等相关性（r = 0.4）。
YouthBAQ是一种快速且易于理解的功能测量方法，在青少年LBP患者中具有良好的效度和信度。在该人群中，YouthBAQ比ODI或MFS更适合作为功能能力的测量方法。
