Table 7. Time-to-event probabilities and difference in probability (with 95% confidence intervals) in dogs attending primary-care practices in the UK as if all dogs prescribed antimicrobials and as if all dogs not prescribed antimicrobials at first presentation for acute diarrhoea, with treatment escalation as the outcome.

Time-to-event probabilities were estimated via IP weighted hazards model.

Days after first presentation for acute diarrhoea	Time-to-event probability as if all dogs prescribed antimicrobials (%)	Time-to-event probability as if all dogs not prescribed antimicrobials (%)	Difference in time-to-event probability (%)	95% Confidence Intervals
1	98.29	97.88	0.41	-0.70 to 1.59
5	94.86	94.12	0.74	-1.92 to 3.46
10	93.49	92.93	0.56	-2.81 to 3.91
15	93.00	92.60	0.40	-3.28 to 3.97
20	92.75	92.47	0.28	-3.53 to 4.00
25	92.60	92.40	0.20	-3.67 to 4.01
30	92.46	92.35	0.11	-3.86 to 3.89