Table 2.

Risk of first hospitalisation for sepsis or first hospitalisation for sepsis with an intensive care unit (ICU) admission — Aboriginal and Torres Strait Islander participants compared with non-Indigenous participants

	Indigenous status	Events	Person-years	HR 1 (95% CI)	HR 2 (95% CI)	HR 3 (95% CI)	HR 4 (95% CI)
Risk of first hospitalisation for sepsis	No	12 366	2 020 793	1.00	1.00	1.00	1.00
	Yes	130	14 996	2.35 (1.98–2.8)	1.98 (1.66–2.35)	1.75 (1.47–2.08)	1.56 (1.31–1.86)
	Unsure	416	34 553	1.20 (1.09–1.32)	1.09 (0.99–1.2)	1.07 (0.97–1.18)	1.05 (0.95–1.16)
Risk of first hospitalisation for sepsis with an ICU admission	No	1 996	2 020 793	1.00	1.00	1.00	1.00
	Yes	30	14 996	2.86 (1.99–4.10)	2.28 (1.59–3.28)	1.97 (1.37–2.84)	1.70 (1.18–2.45)
	Unsure	63	34 553	1.37 (1.06–1.76)	1.26 (0.98–1.62)	1.23 (0.95–1.59)	1.18 (0.92–1.53)

HR 1 = hazard ratio adjusted for time-updated age and sex. HR 2 = hazard ratio adjusted for time-updated age, sex and sociodemographic factors (income, education, region of residence, private health insurance). HR 3 = hazard ratio adjusted for time-updated age, sex, sociodemographic factors, body mass index, smoking status and alcohol consumption. HR 4 = hazard ratio adjusted for time-updated age, sex, sociodemographic factors, body mass index, smoking status, alcohol consumption, comorbidities (heart disease, stroke, diabetes, asthma, teeth left, Charlson Comorbidity Index), anxiety, depression and K10 score. K10 = Kessler 10 Psychological Distress Scale.