PMID- 28087450
OWN - NLM
STAT- MEDLINE
DCOM- 20180112
LR  - 20181202
IS  - 1878-1632 (Electronic)
IS  - 1529-9430 (Linking)
VI  - 17
IP  - 6
DP  - 2017 Jun
TI  - Item response theory analysis to evaluate reliability and minimal clinically 
      important change of the Roland-Morris Disability Questionnaire in patients with 
      severe disability due to back pain from vertebral compression fractures.
PG  - 821-829
LID - S1529-9430(17)30002-5 [pii]
LID - 10.1016/j.spinee.2017.01.002 [doi]
AB  - BACKGROUND CONTEXT: The majority of validation done on the Roland-Morris 
      Disability Questionnaire (RMDQ) has been in patients with mild or moderate 
      disability. There is paucity of research focusing on the psychometric quality of 
      the RMDQ in patients with severe disability. PURPOSE: To evaluate the 
      psychometric quality of the RMDQ in patients with severe disability. STUDY 
      DESIGN/SETTING: Observational clinical study. SAMPLE: The sample consisted of 214 
      patients with painful vertebral compression fractures who underwent 
      vertebroplasty or kyphoplasty. OUTCOME MEASURES: The 23-item version of the RMDQ 
      was completed at two time points: baseline and 30-day postintervention follow-up. 
      METHODS: With the two-parameter logistic unidimensional item response theory 
      (IRT) analyses, we derived the range of scores that produced reliable measurement 
      and investigated the minimal clinically important difference (MCID). RESULTS: 
      Scores for 214 (100%) patients at baseline and 108 (50%) patients at follow-up 
      did not meet the reliability criterion of 0.90 or higher, with the majority of 
      patients having disability due to back pain that was too severe to be reliably 
      measured by the RMDQ. Depending on methodology, MCID estimates ranged from 2 to 8 
      points and the proportion of patients classified as having experienced meaningful 
      improvement ranged from 26% to 68%. A greater change in score was needed at the 
      extreme ends of the score scale to be classified as having achieved MCID using 
      IRT methods. CONCLUSIONS: Replacing items measuring moderate disability with 
      items measuring severe disability could yield a version of the RMDQ that better 
      targets patients with severe disability due to back pain. Improved precision in 
      measuring disability would be valuable to clinicians who treat patients with 
      greater functional impairments. Caution is needed when choosing criteria for 
      interpreting meaningful change using the RMDQ.
CI  - Copyright (c) 2017 Elsevier Inc. All rights reserved.
FAU - Lee, Minji K
AU  - Lee MK
AD  - Division of Health Care Policy and Management, Robert D. and Patricia E. Kern 
      Center for the Science of Health Care Delivery, Mayo Clinic, 200 First St SW, 
      Rochester MN 55905, USA. Electronic address: lee.minji@mayo.edu.
FAU - Yost, Kathleen J
AU  - Yost KJ
AD  - Department of Health Sciences Research, Mayo Clinic, 200 First St SW, Rochester 
      MN 55905, USA.
FAU - McDonald, Jennifer S
AU  - McDonald JS
AD  - Division of Radiology, Mayo Clinic, 200 First St SW, Rochester MN 55905, USA.
FAU - Dougherty, Ryne W
AU  - Dougherty RW
AD  - Mayo Medical School, 200 First St SW, Rochester MN 55905, USA.
FAU - Vine, Roanna L
AU  - Vine RL
AD  - Division of Radiology, Mayo Clinic, 200 First St SW, Rochester MN 55905, USA.
FAU - Kallmes, David F
AU  - Kallmes DF
AD  - Division of Radiology, Mayo Clinic, 200 First St SW, Rochester MN 55905, USA.
LA  - eng
PT  - Journal Article
PT  - Observational Study
DEP - 20170110
PL  - United States
TA  - Spine J
JT  - The spine journal : official journal of the North American Spine Society
JID - 101130732
SB  - IM
MH  - Adult
MH  - Back Pain/*diagnosis
MH  - *Disability Evaluation
MH  - Female
MH  - Fractures, Compression/*diagnosis
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Pain Measurement/methods/standards
MH  - Spinal Fractures/*diagnosis
MH  - Surveys and Questionnaires/*standards
OTO - NOTNLM
OT  - Item response theory
OT  - Kyphoplasty
OT  - Minimal clinically important difference
OT  - Reliability
OT  - Roland-Morris Disability Questionnaire
OT  - Vertebroplasty
EDAT- 2017/01/15 06:00
MHDA- 2018/01/13 06:00
CRDT- 2017/01/15 06:00
PHST- 2016/02/19 00:00 [received]
PHST- 2016/11/08 00:00 [revised]
PHST- 2017/01/03 00:00 [accepted]
PHST- 2017/01/15 06:00 [pubmed]
PHST- 2018/01/13 06:00 [medline]
PHST- 2017/01/15 06:00 [entrez]
AID - S1529-9430(17)30002-5 [pii]
AID - 10.1016/j.spinee.2017.01.002 [doi]
PST - ppublish
SO  - Spine J. 2017 Jun;17(6):821-829. doi: 10.1016/j.spinee.2017.01.002. Epub 2017 Jan 
      10.