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Table 1 Summary statistics of dependent and independent variables

From: Determinants of the geographic distribution of Puumala virus and Lyme borreliosis infections in Belgium

Dependent variables
Label Variable Mean Std. Dev. Min. Max.
PUUV total number of PUUV infections during the 1994–2004 period 1.5 5.3 0 88
Lyme total number of Lyme borreliosis infections during the 1998–2004 period 7.8 13.5 0 104
Independent variables
Label Variable Mean Std. Dev. Min. Max.
Land cover and land use
propforest proportion of forest area (%) 13.7 17.7 0.0 83.5
propleaf proportion of broad-leaved forest area (%) 5.3 8.2 0.0 54.9
urbanisation urbanisation level from a morphological point of view (5 categories) 3.0 1.0 1.0 5.0
Settlement characteristics
housesep proportion of people living in a separated house (%) 50.3 20.3 0.7 87.2
housetwin proportion of people living in a twinned house (%) 20.6 6.6 1.0 42.0
houseadj proportion of people living in an adjoining house (%) 18.9 12.5 1.9 59.2
apartment proportion of people living in an apartment (%) 8.8 11.7 0.2 71.6
cottage proportion of people living in a caravan or country cottage (%) 0.2 0.5 0.0 8.0
Socio-economic data
income average income per 1000 inhabitants in 2002 25173 3752 16916 39735
pop94_04 average population for the 1994–2004 period 17360 27585 86.82 451778
pop98_04 average population for the 1998–2004 period 17473 27492 85.57 448782
Risk behaviours
hunting proportion of people with a hunting licence for Flemish or Walloon forests during the hunting year 2004–2005 (%) 0.34 0.29 0.00 3.45
Host population
roedeer density of roe deer (heads/km2) 1.4 2.0 0.0 18.2