Risk of cancer in the vicinity of municipal solid waste incinerators: importance of using a flexible modelling strategy

Table 1 Poisson regressions.

	Model 1 coefficient (95% CI) deviance; n – p	Model 2 coefficient (95% CI) deviance; n – p
All cancers in women	0.879 (0.671, 1.087) 3029; 2265	0.671 (0.370, 0.971) 2941; 2258
All cancers in men	0.534 (0.316, 0.752) 3782; 2265	0.214 (-0.092, 0.520) 3367; 2256
Breast cancer in women	1.159 (0.826, 1.492) 2596; 2265	0.687 (0.231, 1.144) 2522; 2260
Liver cancer	0.440 (-0.438, 1.318) 2348; 2265	1.119 (-0.131, 2.369) 2287; 2257

The estimates of regression coefficients and their 95% confidence intervals for the index of exposure to MSWIs, deviance and degrees of freedom.
The deviance divided by its degrees of freedom, n – p (number of observations – number of parameters), gives an estimate of the dispersion parameter: if it is > 1 it may indicate overdispersion. Coefficients statistically significant at the 5 per cent level are in bold.
Model 1: without covariates; Model 2: adjusting for the covariates

ISSN: 1476-072X