Fig. 3
From: Patterns of antimicrobial resistance in Salmonella isolates from fattening pigs in Spain

Temporal trends in the percentage of resistant Salmonella isolates from pigs collected through the Spanish Veterinary Antimicrobial Resistance Surveillance Network programme towards seven antimicrobials from 2001 to 2013. Red dots are the observed percentage of resistant isolates; black lines are the fitted values of generalized estimating equation models using the binary results (i.e., resistant and susceptible)
TETÂ tetracycline, CHLÂ chloramphenicol, CIPÂ ciprofloxacin, NALÂ nalidixic acid, GENÂ gentamicin, FFCÂ florfenicol, CTXÂ cefotaxime