Simulation parameters |
Average number of cases |
Mean of vaccination effect coefficient
(standard error) |
Empirical power
(%) |
α |
σ |
|
CPa/FEb |
GEEc |
CP/FE |
GEE |
-5 |
1 |
510 |
0.682 (0.159) |
0.687 (0.159) |
96 |
97 |
|
1.5 |
936 |
0.664(0.127) |
0.662(0.132) |
100 |
100 |
-6 |
1 |
188 |
0.668(0.279) |
0.668(0.280) |
68 |
68 |
|
1.5 |
351 |
0.665(0.207) |
0.661(0.209) |
87 |
87 |
-7 |
1 |
69 |
0.600(0.516) |
0.599(0.516) |
35 |
35 |
|
1.5 |
130 |
0.661(0.355) |
0.655(0.356) |
55 |
54 |
-8 |
1 |
26 |
0.719(0.624) |
0.718(0.624) |
17 |
17 |
|
1.5 |
48 |
0.618(0.574) |
0.611(0.578) |
26 |
26 |
aCP, conditional Poisson model.
bFE, fixed effects model.
cGEE, generalized estimation equations. |