Table 3.
Mean of absolute difference of vaccination effect coefficient from 1000 simulations with true β1=0.693 when individual-specific random effects have a normal distribution.
| Simulation parameters | Mean of absolute difference (maximum) | |
|---|---|---|
| α | σ | CPa/FEb versus GEEc |
| −5 | 1 | 0.0081 (0.0671) |
| 1.5 | 0.0086 (0.0873) | |
| −6 | 1 | 0.0064 (0.1576) |
| 1.5 | 0.0080 (0.1931) | |
| −7 | 1 | 0.0060 (0.1175) |
| 1.5 | 0.0099 (0.2884) | |
| −8 | 1 | 0.0068 (0.2174) |
| 1.5 | 0.0127 (0.3393) | |
a
CP, conditional Poisson model.
b
FE, fixed effects model.
c
GEE, generalized estimation equations.