title: Arthritis self-efficacy and self-efficacy for resisting eating: relationships to pain, disability, and eating behavior in overweight and obese individuals with osteoarthritic knee pain.
abstract: This study examined arthritis self-efficacy and self-efficacy for resisting eating as predictors of pain, disability, and eating behaviors in overweight or obese patients with osteoarthritis (OA) of the knee. Patients (N=174) with a body mass index between 25 and 42 completed measures of arthritis-related self-efficacy, weight-related self-efficacy, pain, physical disability, psychological disability, overeating, and demographic and medical information. Hierarchical linear regression analyses were conducted to examine whether arthritis self-efficacy (efficacy for pain control, physical function, and other symptoms) and self-efficacy for resisting eating accounted for significant variance in pain, disability, and eating behaviors after controlling for demographic and medical characteristics. Analyses also tested whether the contributions of self-efficacy were domain specific. Results showed that self-efficacy for pain accounted for 14% (p=.01) of the variance in pain, compared to only 3% accounted for by self-efficacy for physical function and other symptoms. Self-efficacy for physical function accounted for 10% (p=.001) of the variance in physical disability, while self-efficacy for pain and other symptoms accounted for 3%. Self-efficacy for other (emotional) symptoms and resisting eating accounted for 21% (p<.05) of the variance in psychological disability, while self-efficacy for pain control and physical function were not significant predictors. Self-efficacy for resisting eating accounted for 28% (p=.001) of the variance in eating behaviors. Findings indicate that self-efficacy is important in understanding pain and behavioral adjustment in overweight or obese OA patients. Moreover, the contributions of self-efficacy were domain specific. Interventions targeting both arthritis self-efficacy and self-efficacy for resisting eating may be helpful in this population.
authors.affiliation: Duke University Medical Center, Box 90399, Durham, NC 27708, United States.
authors.forename: Jennifer J
authors.initials: JJ
authors.lastname: Pells
authors.forename: Rebecca A
authors.initials: RA
authors.lastname: Shelby
authors.forename: Francis J
authors.initials: FJ
authors.lastname: Keefe
authors.forename: Kim E
authors.initials: KE
authors.lastname: Dixon
authors.forename: James A
authors.initials: JA
authors.lastname: Blumenthal
authors.forename: Lara
authors.initials: L
authors.lastname: LaCaille
authors.forename: Jessica M
authors.initials: JM
authors.lastname: Tucker
authors.forename: Daniel
authors.initials: D
authors.lastname: Schmitt
authors.forename: David S
authors.initials: DS
authors.lastname: Caldwell
authors.forename: Virginia B
authors.initials: VB
authors.lastname: Kraus
mesh_terms: D018771:Arthralgia / Q000453:epidemiology*; D015897:Comorbidity; D004185:Disability Evaluation; D004651:Employment / Q000706:statistics & numerical data; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009657:North Carolina / Q000453:epidemiology; D009765:Obesity / Q000453:epidemiology* / Q000517:prevention & control; D020370:Osteoarthritis, Knee / Q000453:epidemiology*; D050177:Overweight / Q000453:epidemiology / Q000517:prevention & control; D015995:Prevalence; D011379:Prognosis; D018570:Risk Assessment / Q000379:methods*; D020377:Self Efficacy