Table 3. Analysis of factors associated with seropositivity to E. granulosus in inhabitants of the Limarí province.
| Factor | Pos. result | Neg. result | % | p |
| Sex | ||||
| Male | 5 | 125 | 3.8 | |
| Female | 5 | 249 | 2.0 | 0.45 |
| Age | ||||
| 18–40 years | 4 | 118 | 3.3 | |
| >40 years | 6 | 256 | 2.3 | 0.73 |
| Contact with dogs | ||||
| High rate | 10 | 274 | 3.5 | |
| Low rate | 0 | 97 | 0.0 | 0.07 |
| Occupation | ||||
| Workers | 3 | 121 | 2.4 | |
| Housewife or retired | 6 | 237 | 2.5 | 1.0 |
| Education | ||||
| Primary | 4 | 185 | 2.1 | |
| Secondary | 4 | 165 | 2.4 | 1.0 |
| Knowledge of hydatidosis | ||||
| No | 10 | 311 | 3.2 | |
| Yes | 0 | 63 | 0.0 | 0.38 |
| Collection of dog feces | ||||
| No | 9 | 205 | 4.2 | |
| Yes | 1 | 168 | 0.6 | 0.04 |
| Dogs enter domestic area | ||||
| No | 6 | 190 | 3.1 | |
| Yes | 4 | 184 | 2.1 | 0.75 |
| Dogs sleep in domestic area | ||||
| No | 10 | 346 | 2.8 | |
| Yes | 0 | 28 | 0.0 | 1.0 |
| Dog defecates in backyard | ||||
| No | 4 | 307 | 1.3 | |
| Yes | 6 | 67 | 8.2 | <0.01 |
| Regular veterinary care | ||||
| No | 8 | 293 | 2.7 | |
| Yes | 2 | 77 | 2.6 | 0.73 |
| Deworming of dogs | ||||
| No | 7 | 283 | 2.4 | |
| Yes | 3 | 91 | 3.2 | 0.71 |
| Home slaughter | ||||
| No | 4 | 129 | 3.0 | |
| Yes | 6 | 245 | 2.4 | 0.74 |
| Feeding dogs with viscera | ||||
| No | 5 | 153 | 3.2 | |
| Yes | 4 | 220 | 1.8 | 0.50 |
| Cysts seen in carcasses | ||||
| No | 4 | 150 | 2.6 | |
| Yes | 5 | 219 | 2.2 | 1.0 |
| Public water supply | ||||
| No | 2 | 156 | 1.3 | |
| Yes | 8 | 198 | 3.9 | 0.20 |
| Waste disposal | ||||
| Within private property | 6 | 185 | 3.1 | |
| Public collection | 3 | 183 | 1.6 | 0.50 |
| Number of dogs in household | ||||
| 1 | 4 | 141 | 2.8 | |
| >1 | 6 | 232 | 2.5 | 1.0 |
Analyses were carried out with Fisher exact test. p<0.1 was considered significant.