France : COVID19 – Cases in Hospitals 25/03/2020

This new regression, on French Départements data confirms the intuition : both population and density of population are significant factors in explaining the COVID-29 outbreak in France.

NB. Regional data retained density only as significant independent variable, reflecting mostly the high degree of centralisation in France.

Notice that, for population, the slope of the least squares adjusted line is 0.00016163. It is expected to rise in the coming weeks.

This is an analysis based on public data, and subject to revisions or errors including the processing.

Data sources: Géodes, données en Santé Publique, INSEE.

Here, the analysis

Multiple Regression – COVID19 Cases in hospitals
Dependent variable: COVID19 Cases in hospitals
Independent variables:

Standard                   T
Parameter        Estimate        Error                 Statistic           P-Value
CONSTANT      -12.9895         20.4993           -0.633655           0.5278
Population      0.00016163    0.0000269478    5.99787           0.0000
Density              0.0469516    0.00570321        8.23248           0.0000

Analysis of Variance
Source          Sum of Squares   Df        Mean Square     F-Ratio P-Value
Model                 2.75644E6         2        1.37822E6          93.87     0.0000
Residual             1.43885E6       98        14682.1
Total (Corr.)    4.19529E6        100

R-squared = 65.7032 percent
R-squared (adjusted for d.f.) = 65.0033 percent
Standard Error of Est. = 121.17
Mean absolute error = 71.1496
Durbin-Watson statistic = 1.20888 (P=0.0000)
Lag 1 residual autocorrelation = 0.392756

COVID19 Cases in hospitals = -12.9895 + 0.00016163*Population + 0.0469516*Density

The prediction plot


The components charts



The residual plot


The residual plot mainly reflects the incidence of départements from the “Grand Est”, région, (to some extend also the Rhône). In these areas the outbreak was earlier and linked to a specific origin.


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