Regression models for fat mass
| Model | Explained variance | Model significance | Unstandardised beta coefficient (95% CI), p value | Likelihood-ratio test (compared with covariate) |
| Covariate model | R2=0.8531 |
F(13,1582)=706.71 p<0.0001 | OA type | |
| 2: (0.0 (−0.9 to 1.0)) 3: (−0.1 (−1.3 to 1.1)) 4: (−0.5 (−1.5 to 0.5)) 5: (−0.4 (−1.5 to 0.7)) 6: (−0.6 (−1.9 to 0.7)) 7: (−0.3 (−1.3 to 0.6)) | ||||
| Age (0.0 (0.0 to 0.1)) Sex (4.9 (4.4 to 5.3)) BMI (1.7 (1.7 to 1.7)) CES-D-10 (0.0 (0.0 to 0.1)) EDU (0.0 (−0.1 to 0.1)) INC (0.1 (−0.1 to 0.3)) SEQ (−0.1 (−0.2 to 0.1)) | ||||
| Covariates+NUTHC | R2=0.8534 |
F(14,1581)=657.49 p<0.0001 | NUTHC (0.3 (0.0 to 0.6), p=0.06) | p=0.06 |
| Covariates+NUTFBR | R2=0.8531 |
F(14,1581)=655.83 p<0.0001 | NUTFBR (−0.03 (−0.3 to 0.3), p=0.87) | p=0.87 |
| Covariates+NURSCR | R2=0.8537 |
F(14,1581)=659.14 p<0.0001 | NUR SCR (−0.05 (−0.1 to 0.0), p=0.009) | p=0.009 |
| Covariates+NURCLS | R2=0.8539 |
F(15,1580)=615.78 p<0.0001 | NUR CLS | p=0.01 |
|
2: (0.6 (0.1 to 1.0)), p=0.009
3: (0.6 (0.1 to 1.1)), p=0.014 | ||||
| Covariates+PASE | R2=0.8538 |
F(14,1581)=659.73 p<0.0001 | PA (−0.01 (0.0 to 0.0)), p=0.005 | p=0.004 |
Independent variables: frequency of high calorie snacks (NUTHC), frequency of high fibre cereal (NUTFBR), nutrition risk score (NURSCR), nutrition risk classification (NURCLS 2=moderate risk, NURCLS 3=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.