Covariate | −2*LLa | AICb | Models compared | LRT c statistic | Dfd | P-value |
---|---|---|---|---|---|---|
Viral load multistate model | ||||||
Model 1- No covariates | 7074.605 | – | – | – | – | |
Model 2- CD4 effects | 7014.406 | 7062.99 | Model 1 vs Model 2 | 59.61457 | 12 | 2.65e-08** |
Model 3- CD4 time-varying effects | 7007.724 | 7055.72 | Model 1 vs Model 3 | 66.88163 | 12 | 1.22e-09** |
Model 4- CD4 effects+ CD4 time-varying effects | 6930.714 | 7002.71 | Model 2 vs Model 4 | 83.69604 | 12 | 8.10e-13** |
Model 3 vs Model 4 | 77.01372 | 12 | 1.53e-11** | |||
CD4 cell counts multistate model | ||||||
Model 1- No covariates | 7334.08 | – | – | – | – | |
Model 2- VL effects | 7298.644 | 7342.64 | Model 1 vs Model 2 | 35.36379 | 11 | 2.16e-04** |
Model 3- VL time-varying effects | 7256.166 | 7344.17 | Model 1 vs Model 3 | 77.84109 | 33 | 1.74e-05** |
Model 4- VL effects + VLtime-varying effects | 7227.461 | 7337.46 | Model 2 vs Model 4 | 71.18325 | 33 | 1.28e-04** |
Model 3 vs Model 4 | 28.70595 | 11 | 2.52e-03** |