Regression models for body fat percentage
| Model | Explained variance | Model significance | Unstandardised beta coefficient (95% CI), p value | Likelihood-ratio test (compared with covariate) |
| Covariate Model | R2=0.7670 | F(13,1582)=400.63 p<0.0001 | OA type | |
| 2: (0.1 (−0.9 to 1.0)) 3: (0.2 (−1.0 to 1.5)) 4: (0.0 (−1.0 to 1.0)) 5: (−0.2 (−1.2 to 0.9)) 6: (0.5 (−0.8 to 1.8)) 7: (0.3 (−0.7 to 1.2)) | ||||
| Age (0.1 (0.1 to 0.1)) Sex (11.3 (10.9 to 11.7)) BMI (0.8 (0.8 to 0.9)) CES-D-10 (0.0 (0.0 to 0.1)) EDU (−0.1 (−0.2 to 0.0)) INC (−0.2 (−0.4 to 0.0)) SEQ (0.0 (−0.1 to 0.1)) | ||||
| Covariates+NUTHC | R2=0.7671 | F(14,1581)=371.90 p<0.0001 | NUTHC (0.1 (−0.2 to 0.4)), p=0.53 | p=0.53 |
| Covariates+NUTFBR | R2=0.7676 | F(14,1581)=373.00 p<0.0001 | NUTFBR (−0.3 (−0.6 to 0.0)), p=0.046 | p=0.045 |
| Covariates+NURSCR | R2=0.7691 | F(14,1581)=376.10 p<0.0001 | NURSCR (−0.1 (−0.1 to 0.0)), p<0.001 | p=0.0002 |
| Covariates+NURCLS | R2=0.7688 | F(15,1580)=350.31 p<0.0001 | NURCLS | p=0.002 |
| 2: (0.6 (0.1 to 1.0)), p=0.01 3: (0.8 (0.3 to 1.3)), p=0.001 | ||||
| Covariates+PASE | R2=0.7696 | F(14,1581)=377.20 p<0.0001 | PA (−0.01 (0.0 to 0.0), p<0.001) | p<0.0001 |
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.