Table 5

Regression models for total mass

 Model Explained variance Model significance Unstandardised beta coefficient (95% CI), p value Likelihood-ratio test (compared with covariate) Covariate Model R2=0.8754 F(13,1582)=854.78p<0.0001 OA type 2: (−0.3 (1.9 to 1.2))3: (−1.3 (−3.3 to 0.6))4: (−1.4 (−3.0 to 0.3))5: (−1.2 (−2.9 to 0.5))6: (−2.7 (−4.8 to –0.6))7: (−1.8 (−3.4 to –0.2)) Age (−0.1 (−0.1 to –0.1))Sex (−13.1 (−13.8 to –12.4))BMI (2.7 (2.6 to 2.7))CES-D-10 (0.0 (−0.1 to 0.0))EDU (0.0 (−0.2 to 0.2))INC (0.9 (0.5 to 1.2))SEQ (0.0 (−0.2 to 0.2)) Covariates+NUTHC R2=0.8756 F(14,1581)=794.71p<0.0001 NUTHC (0.4 (−0.1 to 0.9)), p=0.11 p=0.11 Covariates+NUTFBR R2=0.8756 F(14,1581)=794.88p<0.0001 NUTFBR (0.4 (−0.1 to 1.0)), p=0.09 p=0.09 Covariates+NURSCR R2=0.8754 F(14,1581)=793.22p<0.0001 NURSCR (0.0 (−0.1 to 0.1)), p=0.94 p=0.94 Covariates+NURCLS R2=0.8754 F(15,1580)=740.32p<0.0001 NURCLS p=0.65 2: (0.3 (−0.4 to 1.1)), p=0.363: (0.1 (−0.7 to 0.9)), p=0.75 Covariates+PASE R2=0.8755 F(14,1581)=794.26p<0.0001 PA (0.0 (0.0 to 0.0)), p=0.18 p=0.18
• Independent variables: frequency of high calorie snacks (NUTHC), frequency of high fibre cereal (NUTFBR), nutrition risk score (NURSCR), nutrition risk classification (NURCLS2=moderate risk, NURCLS3=high risk) and PASE (Physical Activity Scale for the Elderly). Covariates: OA type (1=hand, hip, knee; 2=knee; 3=hip and knee; 4=hip; 5=hand and knee; 6=hand and hip; 7=hand), age, sex, body mass index (BMI), depressive symptoms (CES-D-10), education level (EDU), income (INC), social inequality (SEQ).

• Bolded variables indicate those that were statistically significant (p<0.05).

• CES-D-10, 10-item Center for Epidemiological Studies Short Depression Scale ; OA, osteoarthritis; PA, physical activity.