Table 4 Estimated parameters from the GEE and ML approaches for analysis of the epilepsy data when period is not included in the models
Parameter | Estimate | SE | Wald | Pr(>|W|) |
|---|---|---|---|---|
Coefficients | ||||
ML approach (\(AIC = 1573; BIC = 1583\)) | ||||
 (Intercept) | 0.5072 | 0.1894 | 7.17 | 0.0074 |
 Treatment | −0.1673 | 0.0667 | 6.30 | 0.0121 |
 Baseline | 0.0232 | 0.0007 | 1113.57 | <.0001 |
 Age | 0.0238 | 0.0056 | 17.99 | <.0001 |
Correlation parameters | ||||
 Alpha | 0.423 | 0.0342 | ||
GEE approach | ||||
 (Intercept) | 0.4467 | 0.3621 | 1.52 | 0.2174 |
 Treatment | −0.1659 | 0.1593 | 1.09 | 0.2977 |
 Baseline | 0.0232 | 0.0012 | 353.32 | <.0001 |
 Age | 0.0258 | 0.0117 | 4.86 | 0.0275 |
Correlation parameters | ||||
 Alpha | 0.544 | 0.0639 |  |  |