(a) Observed (points) and fitted (lines) relative proportions for the prescription of ofloxacin (blue), ciprofloxacin (purple), norfloxacin (green), levofloxacin (red) and moxifloxacin (yellow) from the first weekend of January 2017 (Timepoint 1) until the last weekend of December 2018 (Timepoint 105) for the final generalized estimating equations in the sensitivity analysis. (b) Detail of the observed (points) and fitted (lines) relative proportions for the prescription of ofloxacin (blue), norfloxacin (green) and levofloxacin (red). This figure appears in colour in the online version of JAC and in black and white in the print version of JAC.