Fig. 1
From: Antimicrobial use in pig herds in Ireland: analysis of a national database (2019–2023)
Relationship between quarter and the marginal predicted AMU measured as (A) mg/PCU and (B) DDDvet/PCU from a multivariable model controlling for herd type and size. Dashed line: predictions from a linear spline model; points and error bars: predictions from a multivariable categorical GEE regression model with associated 95% CIs