Incidence of fractures among children and adolescents in rural and urban communities - analysis based on 9,965 fracture events

Table 2 Generalized additive models (GAM) for the Poisson family with a log link

Anova	Residual deviance	Change in deviance	P-value
1) Null model	4569.7		-
2) Year	4541.7	27.98	<0.0001
3) Year + Age	3194.0	1347.74	<0.0001
4) Year + Age + Sex	2767.4	426.60	<0.0001
5) Year + Age + Sex + Area	2709.4	57.99	<0.0001

The models are evaluated with the response variable being the incidence of fractures. In the model the time trend is fitted with a smooth term and linear coefficients are estimated for the variables sex, age and region.

ISSN: 2197-1714