Table 3. GEE linear regression model for the Western Ontario and McMaster Universities Arthritis Index (WOMAC) score.
GEE - Generalized Estimation Equation
| Analysis of GEE parameter estimates | ||||||
| QIC 786.9301 | ||||||
| QICu 784.0000 | ||||||
| Empirical standard error estimates | ||||||
| Parameter | Estimate | Standard error | 95% confidence limits | Z | Pr > Z | |
| Intercept | 47.2741 | 0.9623 | 45.3881 | 49.1601 | 49.13 | < .0001> |
| Month | -3.9713 | 0.1501 | -4.2655 | -3.6770 | -26.45 | < .0001> |
| Month_9 | -36.3520 | 1.0672 | -38.4436 | -34.2604 | -34.06 | < .0001> |
| Int_month_9 | 3.9716 | 0.1505 | 3.6767 | 4.2666 | 26.39 | < .0001> |