Table 3. Prevalence of SCM on some animal-level characteristics.
|
Characteristics |
Explanatory variable |
Animal tested (N) |
No. of positive (x) |
Prevalence (%), 95% CI |
p-value |
|
Age (Years) |
|
|
|
|
0.002 |
|
|
3.5-5 |
238 |
92 |
38.7 (32.4-45.2) |
|
|
|
5-8 |
627 |
282 |
44.9 (41.0-49.0) |
|
|
|
8 above |
147 |
44 |
29.9 (22.7-38.0) |
|
|
|
Total |
1012 |
418 |
41.3 (38.3-44.4) |
|
|
Breed of cows |
|
|
|
|
<0.001 |
|
|
Crossbred |
547 |
258 |
47.2 (42.9-51.5) |
|
|
|
Holstein Friesian |
112 |
50 |
44.6 (35.2-54.3) |
|
|
|
Indigenous (Deshi) |
353 |
110 |
31.2 (26.4-36.3) |
|
|
Lactation stage (Days) |
|
|
|
|
<0.001 |
|
|
Early (<90) |
382 |
107 |
28.0 (23.0-32.8) |
|
|
|
Middle (90-180) |
289 |
113 |
39.1 (33.4-44.9) |
|
|
|
Late (>180) |
341 |
198 |
58.1 (52.6-63.4) |
|
|
Parity |
|
|
|
|
0.003 |
|
|
Primiparous |
209 |
67 |
32.1 (25.8-38.9) |
|
|
|
Multiparous |
803 |
351 |
43.7 (40.3-47.2) |
|
CI: Confidence Interval, χ2: Chi-square Goodness of Fit Test