Table 3. Summary for descriptive and analytic statistics for C. abortus seropositivity in small ruminants from selected smallholder farming areas of Zimbabwe (2020).
| Variable | Level | Distributiond | Association testingd | ||
|---|---|---|---|---|---|
| N | Prevalence (%) | CI (95%) | Fisher’s exact | ||
| Seropositivity | Overall | 398 | 8 (2.0) [0.6] | 0.9–3.9 | - |
| Location* | 1: Chivi | 138 | 7 (5.1) | 2.1–10.2 | p = 0.006 |
| 2: Zvimba | 162 | 0 | - | ||
| 3: Makoni | 64 | 0 | - | ||
| 4: Abattoir | 34 | 1 (2.9) | 0.1–15.3 | ||
| Species | 1: Caprine | 335 | 8 (2.4) | 1.0–4.7 | p = 0.366 |
| 2: Ovine | 63 | 0 | - | ||
| Age | 1: 1<x≤2 years | 69 | 0 | - | p = 0.703 |
| 2: 2<x≤3 years | 59 | 2 (3.4) | 0.4–11.7 | ||
| 3: 3<x≤4 years | 93 | 2 (2.2) | 0.3–7.6 | ||
| 4: 4<x≤5 years | 120 | 3 (2.5) | 0.5–7.1 | ||
| 5: x>5 years | 57 | 1 (1.8) | 0.0–9.4 | ||
| Parity | 0: 0 | 1 | 0 | - | p = 0.851 |
| 1: 1–2 | 212 | 4 (1.9) | 0.5–4.8 | ||
| 2: 3–4 | 144 | 4 (2.8) | 0.8–7.0 | ||
| 3: ≥5 | 28 | 0 | - | ||
| Sex | 1: Female | 385 | 8 (2.1) | 0.9–4.1 | p = 1.000 |
| 2: Male | 13 | 0 | - | ||
| Abortion history | 0: No | 281 | 8 (2.9) | 1.2–5.5 | p = 0.115 |
| 1: Yes | 104 | 0 | - | ||
N, number of animals; P, probability value; CI, Confidence Interval
* These variables had Fisher’s Exact p < 0.05 and were used in the univariable logistic regression analysis
d Dependent variable: small ruminant seropositivity for Chlamydia abortus (negative = 0, positive = 1); [%] test adjusted prevalence.