Multi-Component Structure of Roland-Morris Disability Questionnaire (RDQ), a Lumbago-Specific QOL (Quality of Life)...

Area of Science:

• Orthopedics
• Rheumatology
• Quality of Life Research

Background:

• Lumbago is a frequent symptom in patients suffering from osteoporotic vertebral fractures.
• The Roland-Morris Disability Questionnaire (RDQ) is a standard tool for assessing lumbago-related quality of life (QOL).
• Current analysis of RDQ typically relies on total scores, potentially underutilizing its full potential.

Purpose of the Study:

• To explore the utility of RDQ subscale analysis for evaluating QOL in osteoporotic vertebral fracture patients.
• To investigate the relationship between RDQ scores and other QOL measures.
• To identify underlying components within the RDQ.

Main Methods:

• Forty-four patients with osteoporotic vertebral fractures were assessed using the RDQ and the SF-8 QOL questionnaire.
• Statistical analyses included multiple regression and principal component analysis.
• RDQ and SF-8 scores were compared to Japanese population norms.

Main Results:

• Patients with fractures exhibited significantly lower QOL scores on both RDQ and SF-8 compared to norms.
• Bodily pain and other SF-8 subscales significantly contributed to the total RDQ score.
• Principal component analysis indicated that the RDQ comprises two distinct components: general and mental/social aspects of lumbago.

Conclusions:

• Subscale analysis of the RDQ offers a more comprehensive evaluation of lumbago in osteoporotic fracture patients.
• Identifying RDQ's component structure can enhance its application in clinical practice.
• Further research into RDQ subscale derivation is warranted for improved patient assessment.