{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T15:44:53Z","timestamp":1789659893468,"version":"4.0.1"},"reference-count":44,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2012,4,26]],"date-time":"2012-04-26T00:00:00Z","timestamp":1335398400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthritis &amp; Rheumatism"],"published-print":{"date-parts":[[2012,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To evaluate whether low knee confidence at baseline is associated with poor baseline\u2010to\u20103\u2010year physical function outcome in the Osteoarthritis Initiative.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Knee confidence was assessed using an item from the Knee Injury and Osteoarthritis Outcome Score instrument. Physical function was assessed using self\u2010report measures (Western Ontario and McMaster Universities Osteoarthritis Index [WOMAC] function score and Short Form 12 physical component scale) and performance\u2010based measures (20\u2010meter walk and chair stand test). Poor function outcome was defined as moving into a worse function group or remaining in the 2 worst function groups between baseline and 3 years. Logistic regression was used to evaluate the relationship between baseline knee confidence level and poor baseline\u2010to\u20103\u2010year function outcome, adjusting for potential confounders.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The sample included 3,975 men and women with or at high risk of developing osteoarthritis of the knee, of whom 37\u201353% had poor baseline\u2010to\u20103\u2010year function outcome. For both self\u2010report measures, increasingly worse knee confidence was associated with a greater risk of poor function outcome, and trend tests supported a graded response (e.g., the adjusted odds ratios [95% confidence intervals] for the WOMAC function score for worsening confidence categories were 1.26 [1.07\u20131.49], 1.43 [1.16\u20131.77], and 2.05 [1.49\u20132.82],\n                      <jats:italic>P<\/jats:italic>\n                      for trend &lt;0.0001). Similar associations between confidence and performance\u2010based function outcome were observed, but statistical significance did not persist in adjusted analyses. Factors independently associated with poor function outcome for all 4 outcome measures were depressive symptoms, comorbidity, body mass index, and joint space narrowing.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>These findings indicate that worse knee confidence at baseline is independently associated with greater risk of poor function outcome by self\u2010report measures, with evidence of a graded response; the relationship with performance measures is not significant in fully adjusted models.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/art.33505","type":"journal-article","created":{"date-parts":[[2011,12,2]],"date-time":"2011-12-02T21:12:16Z","timestamp":1322860336000},"page":"1437-1446","source":"Crossref","is-referenced-by-count":50,"title":["Knee confidence as it relates to physical function outcome in persons with or at high risk of knee osteoarthritis in the Osteoarthritis Initiative"],"prefix":"10.1002","volume":"64","author":[{"given":"Carmelita J.","family":"Colbert","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Song","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dorothy","family":"Dunlop","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joan S.","family":"Chmiel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karen W.","family":"Hayes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"September","family":"Cahue","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kirsten 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