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Table 2 The influence of the risk factors, including host species (domestic cat and dog), age (adult, juvenile), sex (female, male) and season (Spring, Summer), on Enterocytozoon bieneusi prevalence (by PCR-based sequencing of the internal transcribed spacer, ITS), assessed using the Chi-square and Fisher’s exact tests

From: Enterocytozoon bieneusi genotypes in cats and dogs in Victoria, Australia

Risk factors (host/age/sex/season) No. of samples tested No. of test-negative samples No. of test-positive samples (%) Odds ratio (95% CI) P-value Chi-square
Host species
 Cat 172 167 5 (2.9) 1.532 (0.547–4.288) 0.478 0.413
 Dog 342 327 15 (4.4)    
 Total 514 494 20 (3.9)    
Age group
 Adult 371 361 10 (2.7) 3.112 (1.264–7.663) 0.016* 0.010*
 Juvenile 126 116 10 (7.9)    
 Total 497 477 20 (4.0)    
Sex
 Female 233 224 9 (3.9) 0.957 (0.382–2.397) 1.000 0.926
 Male 270 260 10 (3.7)    
 Total 503 484 19 (3.8)    
Season
 Spring 227 220 7 (3.1) 1.491 (0.585–3.801) 0.494 0.400
 Summer 287 274 13 (4.5)    
 Total 514 494 20 (3.9)    
  1. * = statistically significant (P < 0.05). df degree of freedom. Each df = 1 in this study
  2. The strength of association was measured using an odds ratio calculated with 95% confidence intervals (95% CI), and statistical significance was given as a P-value