Table 4.

Body temperature at veterinary presentation as a risk factor for death (all causes) and unassisted death in dogs diagnosed with heat-related illness presenting to primary-care veterinary practices in the UK between 2016 and 2018.

Temperature	Clinical sign present			Clinical sign not present			Relative Risk	95% CI*	p-value
	n	Deaths	% Fatality Rate	n	Deaths	% Fatality Rate
< 37.2 °C	14	2	14.29	483	32	6.63	2.16	0.54 to 28.79	0.256
≥ 41 °C	132	37	28.03	483	32	6.63	4.23	2.75 to 6.52	< 0.001
≥ 43 °C	19	14	73.68	596	55	9.23	7.98	5.52 to 11.54	< 0.001

Temperature	n	Unassisted deaths	% Fatality Rate	n	Unassisted deaths	% Fatality Rate	Relative Risk	95% CI	p-value
< 37.2 °C	13	1	7.70	460	9	1.96	3.93	0.54 to 28.79	0.256
≥ 41 °C	110	15	13.64	460	9	1.96	7.06	3.17 to 15.71	< 0.001
≥ 43 °C	12	7	58.33	558	17	3.05	19.15	9.81 to 37.39	< 0.001

Relative risk describes the risk of death in heat-related illness cases meeting each temperature criterion compared to cases that did not meet this criterion. *CI confidence interval n = 629 for overall death analysis, n = 583 for unassisted death analysis.