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The result of the sample size calculation was 175 cases and 175 controls.Age among the groups was compared by the student’s infection between truck drivers and control subjects, the Mc Nemar’s test was used.
As a strategy to enroll drivers, they were invited to participate in gas stations, small motels for truck drivers, and truck stops on the roads.
: One hundred and ninety two control subjects without truck driver occupation matched with drivers by age and gender were included in the study.
Control subjects were randomly selected from the general population of Durango City, Mexico.
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We used the Pearson’s chi-squared test and the two-tailed Fisher’s exact test (when values were less than 5) to determine the association of seropositivity and the characteristics of the drivers studied.
Odds ratio (OR) and 95% confidence interval (CI) were calculated by multivariate analysis using logistic regression with the Enter method.
To the best of our knowledge, this is the first age- and gender matched case control study that demonstrates this association.
We attempted to identify contributing factors for infection in the truck drivers.
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can be acquired via the ingestion of undercooked or raw meat containing tissue cysts, or via ingestion of water contaminated with oocysts.
None of the drivers studied referred to eat raw meat.