Regression models for lean mass
| Model | Explained variance | Model significance | Unstandardised beta coefficient (95% CI), p value | Likelihood-ratio test (compared with covariate) |
| Covariate Model | R2=0.8314 | F(13,1582)=600.06 p<0.0001 | OA type | |
| 2: (−0.3 (−1.6 to 0.9)) 3: (−1.3 (−2.8 to 0.3)) 4: (−0.8 (−2.1 to 0.5)) 5: (−0.8 (−2.1 to 0.6)) 6: (−2.1 (−3.7 to –0.4)) 7: (−1.5 (−2.7 to –0.2)) | ||||
| Age (−0.1 (−0.2 to –0.1)) Sex (−18.0 (−18.5 to –17.4)) BMI (1.0 (0.9 to 1.0)) CES-D-10 (0.0 (−0.1 to 0.0)) EDU (0.1 (−0.1 to 0.2)) INC (0.8 (0.5 to 1.0)) SEQ (0.1 (−0.1 to 0.2)) | ||||
| Covariates+NUTHC | R2=0.8314 | F(14,1581)=556.99 p<0.0001 | NUTHC (0.1 (−0.3 to 0.5)), p=0.56 | p=0.56 |
| Covariates+NUTFBR | R2=0.8319 | F(14,1581)=559.03 p<0.0001 | NUTFBR (0.5 (0.1 to 0.9)), p=0.02 | p=0.02 |
| Covariates+NURSCR | R2=0.8319 | F(14,1581)=558.76 p<0.0001 | NURSCR (0.1 (0.0 to 0.1)), p=0.03 | p=0.03 |
| Covariates+NURCLS | R2=0.8316 | F(15,1580)=520.32 p<0.0001 | NURCLS | p=0.31 |
| 2: (−0.3 (−0.8 to 0.3)), p=0.39 3: (−0.5 (−1.1 to 0.1)), p=0.13 | ||||
| Covariates+PASE | R2=0.8330 | F(14,1581)=563.33 p<0.0001 | PA (0.01 (0.01 to 0.02)), 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.