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. 2007 May 2;6:15. doi: 10.1186/1476-072X-6-15

Table 1.

Summary statistics of dependent and independent variables

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