In the next step, the association between income inequality and mortality were analyzed on the individual level, controlling for any impact from individual variables such as disposable income and level of education, as well as aggregated variables, including mean income in the municipalities.
In a second step the paper develops a model to forecast oral healthcare sector growth based on various explanatory variables such as demographic change, take-up behaviour, medical-technical progress, oral morbidity, aggregated supply (collective dental treatment times) as well as income levels and distribution, where the latter two are considered to be of particular importance.
The authors write in another paper:Traditionally, economic development has been measured through a host of aggregated variables, mainly GDP, adujusted for PPP.
This different nature of the aggregated variables, and the way they are grouped together, raises concerns.
We then coded remaining questions into the following overarching emergency care relevant, aggregated variables: 1. Emergency procedural skills 2.
with multisourced, site-specific information at various scales (including aggregated variables and empirical relationships).
We did not attempt to infer an individual-level association of variables from an association demonstrated only for aggregated variables.
The detection rules were based on aggregated variables, i.e. groups of codes chosen by a committee of experts.
In the present study, a committee of expert pharmacologists and pharmacists used the aggregated variables to build a set of complex detection rules.
For example, one approach may be focused on modelling countable objects, while another approach may disregard individual objects and only keep track of aggregated variables.
