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Table 4 Multivariate analysis on HEV infection in the global, black Iberian pig, and wild boar populations

From: Protist enteroparasites in wild boar (Sus scrofa ferus) and black Iberian pig (Sus scrofa domesticus) in southern Spain: a protective effect on hepatitis E acquisition?

Variable Condition OR 95% CI P-value
Global swine population
 Giardia duodenalis Negative 0.224 0.06‒0.754 0.016
 Cryptosporidium spp. Negative 1.062 0.334‒3.377 0.918
 Blastocystis sp. Negative 0.298 0.133‒0.665 0.003
 Neobalantidium spp. Negative 1.474 0.703‒3.089 0.304
 Strongyloides spp. Negative 0.862 0.238‒3.126 0.822
Black Iberian pigs
 Giardia duodenalis Negative 0.125 0.015‒1.036 0.054
 Cryptosporidium spp. Negative 2.182 0.489‒9.736 0.307
 Blastocystis sp. Negative 0.163 0.06‒0.421 < 0.001
 Neobalantidium spp. Negative 0.874 0.336‒2.273 0.783
 Strongyloides spp. Negative 1.073 0.263‒4.383 0.921
 Type of pig Sow 2.148 0.851‒5.421 0.105
Wild boars
 Giardia duodenalis Negative 0.778 0.081‒7.428 0.328
 Cryptosporidium spp. Negative 1.011 0.1‒10.254 0.313
 Blastocystis sp. Negative
Neobalantidium spp. Negative 1.125 0.295‒4.29 0.476
 Strongyloides spp. Negative
 Sex Male 2.940 1.028‒8.408 0.034
 Age Juvenile 1.042 0.335‒3.235 0.356
  1. Note: Bold values denote statistical significance at the P < 0.05 level
  2. Abbreviations: OR, odds ratio; CI, confidence interval