TABLE 3.

Association between low aMED and poor SF-12, WOMAC, and CES-D scores¹

	Unadjusted OR (95% CI)	P value	Fully adjusted OR (95% CI)	P value
SF-12
MCS	1.35 (1.17, 1.57)	<0.0001	1.20 (1.05, 1.38)	0.01
PCS	1.39 (1.22, 1.57)	<0.0001	1.19 (1.01, 1.39)	0.03
WOMAC
Right knee pain	1.29 (1.14, 1.47)	<0.0001	1.11 (0.98, 1.28)	0.11
Right knee stiffness	1.14 (1.00, 1.30)	0.05	1.02 (0.89, 1.17)	0.78
Right knee disability	1.33 (1.17, 1.50)	<0.0001	1.14 (0.99, 1.30)	0.07
Right knee total	1.37 (1.21, 1.55)	<0.0001	1.17 (1.02, 1.33)	0.03
Left knee pain	0.78 (0.69, 0.89)	<0.0001	0.91 (0.80, 1.04)	0.19
Left knee stiffness	1.19 (1.05, 1.35)	0.006	1.07 (0.94, 1.22)	0.32
Left knee disability	1.20 (1.06, 1.34)	0.006	1.02 (0.89, 1.16)	0.80
Left knee total	1.22 (1.08, 1.38)	0.002	1.04 (0.91, 1.19)	0.60
CES-D	1.57 (1.25, 1.96)	<0.0001	1.22 (0.96, 1.55)	0.10

¹Data were obtained through a logistic regression analysis. aMED was categorized with the use of the fourth and fifth quintiles (higher adherence = reference) compared with the other 3 quintiles. Median values for all scores were considered for the logistic regression analysis except for CES-D, for which 16 was considered to be the cutoff of clinical depression. The fully adjusted model included the following as covariates: age, sex, race, BMI (in kg/m²), education, smoking status, annual income, Charlson comorbidity index, use of analgesic drugs, and total energy intake. P < 0.05 was considered significant after adjusting for all covariates in the fully adjusted model. aMED, adherence to Mediterranean diet; CES-D, Center for Epidemiologic Studies Depression Scale; MCS, mental health composite scale; PCS, physical composite scale; SF-12, 12-Item Short-Form Health Survey; WOMAC, Western Ontario and McMaster Universities Arthritis Index.