Variable | Specifications | |
Dependent variable | Population change | Population change as a relative number with logarithmic conversion, which is applied to obtain Gaussian distribution. Equation can be written:, where ∆PopRel is relative logarithmic population change, Pop2003 is the population of each cell in 2003 and Pop2009 in population in 2009. |
Explanatory variables | Average age | Average age of inhabitants. |
Academic education | Proportion of inhabitants with academic degree. Number of inhabitants over 18 years old with academic degree or higher vocational diploma divided by number of inhabitants with a lower level of education. | |
Average income | Average annual taxable income (€) of inhabitants aged over 18. | |
Employment rate | The share of employed labour force of inhabitants aged 15 - 74. Number of inhabitants who were gainfully employed during the last week of the year divided by the number of inhabitants in the whole age group. | |
Potential accessibility | Road network based potential accessibility of population. Fastest route travel times applied in computation. For larger resolutions than 2 km × 2 km population weighted averages are used. | |
Airport accessibility | Fastest route travel times by road network to the nearest airport in minutes. For larger resolutions than 2 km × 2 km, population weighted averages are used. | |
Population density | The total population of the cell is divided by the number of inhabited cells in the original data of 1 km × 1 km resolution. |