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Occurrence of hydatid cysts in relation to sex and age of sheep slaughtered at Basrah abattoir (n = 631, between May and October 2016).
| Slaughtered sheep characteristics | Number examined | Number positive | Occurrence (%) | Odd ratio | P value |
|---|---|---|---|---|---|
| Sex | |||||
| Male | 418 | 13 | 3.1 | 1 | |
| Female | 213 | 33 | 15.5 | 0.70 | 0.670 |
| Age | |||||
| Young (<1 year) | 294 | 9 | 3.1 | 1 | |
| Adult (>1 year) | 337 | 37 | 11.0 | 0.86 | 0.792 |
| Interaction between age and sex | |||||
| Male and young (<1 year) | 210 | 7 | 3.3 | 1 | |
| Female and adult (>1 year) | 129 | 31 | 24.0 | 15.05 | 0.004 |
