Table 1. Comparison of sero-prevalence against P. westermani antigen by elements of qualitative variables concerning dogs’ biological and hunting background in P. westermani detected (Pw+ Area) and non-detected (Pw− Area) areas.
| Variable | Element | Pw+ Area | Pw− Area | ||
|---|---|---|---|---|---|
| Prevalence (No. sero-positive/surveyed) |
Odds ratio | Prevalence (No. sero-positive/surveyed) |
Odds ratio | ||
| Gender | Male | 39.3 (66/168) | 0.90 | 51.9 (41/79) | 0.99 |
| Female | 41.7 (53/127) | 52.2 (35/67) | |||
| Breed | Japanese | 41.0 (71/173) | 0.83, 1.36, 1.64a) | 60.0 (33/55) | 2.00, 1.59, 0.79a) |
| European | 45.6 (26/57) | 42.9 (9/21) | |||
| Mixed | 33.9 (22/65) | 48.6 (34/70) | |||
| Predating brackish water crabs and/or crayfishes | Yes | None | NE | 50.0 (6/12) | 0.91 |
| No | 40.3 (119/295) | 52.2 (70/134) | |||
| Being fed with raw wild boar meat | Yes | 49.2 (97/197) | 3.35* | 55.0 (60/109) | 1.61 |
| No | 22.5 (22/98) | 46.2 (16/37) | |||
| Nibbling on wild boars | Yes | 46.7 (57/122) | 1.57 | 44.4 (20/45) | 0.64 |
| No | 35.8 (62/173) | 55.4 (56/101) | |||
a) Odds ratios for Japanese vs European, Japanese vs mixed and European vs mixed, respectively. *Significant difference (P<0.01) in the χ2 test. NE: not evaluated.