Fixed effects risk factors in the final models of soil properties at broiler grow-out farm location associated with probabilities of detecting Salmonella in the samples and drags swabs of litter (n = 76)a.

aRandom effects of the broiler farms, complexes, companies, or farm latitude were not found to make significant (p≤0.050) contributions to the variability in the responses in these models.bSoil natural drainage rate classes: Somewhat Excessive (15.2–50.8 cm per hour)–5, Well (5.1–15.2 cm per hour)–4, Moderately Well (1.5–5.1 cm per hour)–3, Somewhat Poor (0.5–1.5 cm per hour)–2, and Poor (0.2–0.5 cm per hour)–1.