title: Interpreting differences over time in patient self-evaluation.
authors.forename: Michael
authors.initials: M
authors.lastname: Robling
authors.forename: Kerenza
authors.initials: K
authors.lastname: Hood
authors.forename: Chris
authors.initials: C
authors.lastname: Butler
mesh_terms: D006801:Humans; D015207:Osteoarthritis, Hip / Q000523:psychology*; D020370:Osteoarthritis, Knee / Q000523:psychology*; D010146:Pain / Q000209:etiology; D010147:Pain Measurement; D011379:Prognosis; D012648:Self Care