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. 2011 Dec 13;10:65. doi: 10.1186/1476-072X-10-65

Table 1.

Linear correlations between initial environmental variables and P. vivax and P. falciparum incidences.

P. vivax P. falciparum#
Variable Pearson r P value Pearson r P value

% bare soil# -0.17 0.381 -0.69 < 0.001**
% secondary forest 0,00 0.999 -0.03 0.891
% primary forest 0.08 0.688 0.54 0.003**
% deep water 0.28 0.149 -0.39 0.043*
% burned land# -0.24 0.218 -0.43 0.022*
% low vegetation -0.09 0.665 0.06 0.761
% medium vegetation# -0.05 0.783 0.24 0.227
% high vegetation 0.17 0.396 0.68 < 0.001**
% river banks/shallow water# 0.30 0.124 -0.24 0.212
No. of inhabited dwellings# -0.30 0.116 -0.60 0.001**
Length of river banks# 0.32 0.097 -0.44 0.018*
Length of creeks# -0.06 0.771 0.48 0.01*
Landscape divison 1 0.46 0.013* -0.10 0.601
Landscape divison 2 0.49 0.008** 0.48 0.009**

We used buffers with radii of 100 m and 400 m for P. vivax and P. falciparum incidences, respectively. Symbols * and ** correspond to statistical significance at the 0.05 and 0.01 (alpha risks) levels, respectively. Significant correlation coefficients are shown in bold. Landscape division 2 was computed by considering all land-cover classes other than unfragmented forest. The symbol # identifies variables that have been transformed (square-root transformation).