Open Access
Table 2
Risk factors associated with the prevalence of Enterocytozoon bieneusi among rodents and shrews inhabiting pig farms.
| Variable | No. positive/No. tested | Positive rate % (95% CI) | Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|---|---|---|
| p-value | OR (95% CI) | p-value | OR (95% CI) | ||||
| Host Species | Rattus tanezumi | 32/136 | 23.5 (16.3–30.7) | 0.018 | 3.54 (0.79–15.83) | 0.259 | 4.01 (0.75–21.62) |
| Rattus norvegicus | 5/58 | 8.6 (1.2–16.1) | 1.085 (0.20–6.01) | 2.02 (0.29–14.01) | |||
| Mus musculus | 2/25 | 8.0 (−3.4–19.4) | 1 | 1 | |||
| Others | 0/8 | 0 (−) | na | na | |||
| Host Age | Juvenile | 11/79 | 13.9 (6.1–21.7) | 0.342 | 1 | ||
| Adult | 28/148 | 18.9 (12.5–25.3) | 1.44 (0.68–3.08) | ||||
| Host Sex | Female | 17/110 | 15.5 (8.6–22.3) | 0.504 | 1 | ||
| Male | 22/117 | 18.8 (11.6–26.0) | 1.27 (0.63–2.54) | ||||
| Region | Henan | 25/189 | 13.2 (8.4–18.1) | 0.002 | 1 | 0.006 | 1 |
| Shaanxi | 12/34 | 35.3 (18.4–52.2) | 3.58 (1.58–8.12) | 3.46 (0.46–26.30) | |||
| Shanxi | 2/4 | 50.0 (−41.9–141.9) | 6.56 (0.88–48.70) | 4.01 (0.75–21.62) | |||
| Season | Spring | 25/135 | 18.5 (11.9–25.2) | 0.551 | 1 | ||
| Summer | 11/54 | 20.4 (9.3–31.5) | 1.13 (0.51–2.49) | ||||
| Autumn | 3/9 | 33.3 (−5.1–71.8) | 2.20 (0.52–9.40) | ||||
| Winter | 0/29 | 0 (−) | na | ||||
| Farm type | Breeding farm | 30/166 | 18.1 (12.2–24.0) | 0.557 | 1.28 (0.57–2.87) | ||
| Fattening farm | 9/61 | 14.8 (5.6–23.9) | 1 | ||||
| Farm size | ＞10000 | 14/99 | 14.1 (7.2–21.1) | 0.105 | 1 | 0.167 | 1 |
| 2000 ~ 10000 | 25/109 | 22.9 (14.9–31.0) | 1.81 (0.88–3.71) | 2.35 (0.97–5.67) | |||
| <2000 | 0/19 | 0 (−) | na | na | |||
| Duration of pig rearing | >5 years | 13/78 | 16.7 (8.2–25.1) | 0.537 | 1.11 (0.50–2.47) | ||
| 3–5 years | 16/105 | 15.2 (8.2–22.2) | 1 | ||||
| <3 years | 10/44 | 22.7 (9.8–35.6) | 1.64 (0.68–3.96) | ||||
OR, odds ratio; CI, confidence interval; na, not applicable.
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