simul_pois1 contains 300 simulated Poisson counts.
10 regressors are generated, six of them continuous N(0,1)-variables
and four binary with $p(x_i)=0.5$. The regression effects are set to
beta = {2,1,0.6,0,0,1.2,0,0,0.4,-0.2,0.3}.
data(simul_pois1)yX.0X.1, X.2, X.3, X.4, X.5, X.6, X.7, X.8, X.9, X.10poissonBvs