Table 5 Factors related to colostrum positivity. Results from three univariable logistic regression models to identify significant predictors of immunoglobulin positivity in colostrum among a) symptoms, b) interval from disease to sample, and c) active disease at birth
Predictors of antibody positivity in colostrum | IgA (n = 158) | IgG (n = 160) | IgM (n = 76) |
|---|---|---|---|
Odds Ratio (95% Confidence interval) | Odds Ratio (95% Confidence interval) | Odds Ratio (95% Confidence interval) | |
Asymptomatic (n = 40, 42, 13) | Reference | Reference | Reference |
Mild (n = 102, 104, 62) | 1.27 (0.50, 3.04) | 1.22 (0.15, 25.01) | 0.80 (0.21, 3.97) |
Severe (n = 16, 14, 1) | 4.35 (0.72, 84.10) | 3.15 (0.12; 83.62) | NA |
Interval from disease to sample – colostrum (days) | 1.00 (0.99, 1.00) | 1.00 (0.98, 1.01) | 1.00 (0.99, 1.00) |
No active disease (n = 133, 136, 67) | Reference | Reference | Reference |
Active disease (n = 25, 24, 9) | 0.51 (0.20, 1.44) | 1.43 (0.07, 10.25) | 1.19 (0.16, 5.63) |