Digital Scotland: Fig. III.5

The effect of each SIMD factor on the odds of being offline.

Every factor except education has a significant effect.

The model is produced from the training dataset, using the following code:

scotglm <-
    vglm(formula =
         cbind(offline, connected)
         ~ slowlines + income + employment + housing
         + health + education + crime + isolation,
         family = betabinomial(zero=NULL), 
         data = training)

Here we use a different parametrisation of the betabinomial distribution, in terms of its mean and dispersion, as this gives a coefficient we can interpret directly as an odds ratio.