Table 6. Risk difference (RD) (and 95% confidence intervals [CI]) for clinical resolution in dogs under UK primary veterinary care prescribed antimicrobials or gastrointestinal nutraceuticals for acute diarrhoea.

The estimates represent the risk in dogs prescribed antimicrobials or gastrointestinal nutraceuticals using inverse probability of treatment weighting to adjust for confounding.

Treatment	Adjusted risk of clinical resolution as if all dogs prescribed (%)	Adjusted risk of clinical resolution as if all dogs not prescribed (%)	IPW RD
Antimicrobials	88.3	87.9	0.4% (95% CI -4.5% to 5.3%)
Gastrointestinal nutraceuticals	88.2	88.0	0.3% (95% CI -4.5% to 5.0%)