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Psychological health impact on 2-year changes in pain and function in persons with knee pain: data from the Osteoarthritis Initiative.

Abstract：

OBJECTIVE:We determined whether baseline depressive symptoms, knee-related confidence and general psychological distress influenced changes in pain and function during 2 years of follow-up. DESIGN:We included persons in the Osteoarthritis Initiative (OAI) dataset with baseline pain of 1 or greater on a 0-10 scale in at least one knee and no knee or hip surgery during the 2-year follow-up (n=3407). The four outcome variables were repeated chair standing, 20 m walk and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Pain and Disability. Linear mixed effects models assessed the association of each mental health variable with the yearly change in each baseline adjusted outcome measure after controlling for covariates. RESULTS:Depressive symptoms were significantly predictive of worsening in most outcomes. The magnitude of worsening predicted for each year was small. For example, the dichotomized WOMAC Pain model indicated that depressed persons experience more rapid worsening than non-depressed persons at an average rate of 0.59 WOMAC points per year (95% CI 0.176, 1.013, P=0.005). Similar significant but very small effects of depressive symptoms on other outcomes were observed. Knee confidence was not predictive of change. General psychological distress was predictive of change in 20-m walk and WOMAC Pain. CONCLUSIONS:The most consistent psychological predictor of yearly worsening was baseline depressive symptoms. Although a statistically robust predictor of outcome, given that change was very small and highly dependent on baseline status, our results indicate that a considerable degree of persistent depressive symptoms would be required to have a meaningful effect on future self-reported outcome.

journal_name

Osteoarthritis Cartilage

journal_title

Osteoarthritis and cartilage

authors

Riddle DL,Kong X,Fitzgerald GK

doi

10.1016/j.joca.2011.06.003

subject

Has Abstract

pub_date

2011-09-01 00:00:00

pages

1095-101

issue

eissn

1063-4584

issn

1522-9653

pii

S1063-4584(11)00162-2

journal_volume

pub_type

杂志文章,多中心研究

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Psychological health impact on 2-year changes in pain and function in persons with knee pain: data from the Osteoarthritis Initiative.