The corresponding pre - and post-intervention point prevalence of systemic antibiotic prescribing for treatment of infection was 6.46 % and 6.52 % in the IG [ estimated prevalence ratio : 1.01 ( 95 % CI : 0.81-1 .25 ) , P = 0.94 ] compared with 5.27 % and 5.83 % , respectively , in the CG [ estimated prevalence ratio : 1.11 ( 95 % CI : 0.87-1 .41 ) , P = 0.4 ] .