Figure 4From: Insights into udder health and intramammary antibiotic usage on Irish dairy farms during 2003-2010The predicted probability of a herd either having a SCC result exceeding 400,000 cells/mL or < = 200,000 cells/mL based on the results from the final logistic GEE models for small herds (Q1) in January comparing herds calving in Spring against all other herds.Back to article page