Table 5 shows antibody tests frequency to be 4.35 times higher in high-risk periods (IRR: 4.35, p < 0.001), while a modest but marginally statistically significant reduction was observed during epidemic seasons (IRR: 0.71, p ≤ 0.05).
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Evaluation of risk-based antigen and antibody surveillance strategies and their association with HPAI outbreaks in South Korean duck farms.
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marginal significancep ≥ 0.05
The interaction term approached marginal significance (IRR: 1.42, p ≥ 0.05), suggesting a possible, though not conclusive, season-specific increase in antibody testing during high-risk periods. 3.5.