Table 1.

Baseline descriptive statistics for the study cohort and the register-derived cohort

		Study cohort (2010–18)		Register-derived cohort (2004–18)
		N	%	n	%
Total		1718	100.0	2103	100.0
Age group	0–4	15	0.9	20	1.0
	5–14	692	40.3	972	46.2
	15–24	552	32.1	690	32.8
	25–34	459	26.7	421	20.0
Sex	Male	632	36.8	830	39.5
	Female	1086	63.2	1273	60.5
Population group	Indigenous	1453	84.6	1945	92.5
	ILIC	187	10.9	115	5.5
	Other Australian	78	4.5	42	2.0
Source of RHD diagnosis	Register	1154	67.2	2103	100.0
	Hospital	564	32.8	0	0.0
Jurisdictiona	Northern Territory (NT)	628	36.6	913	43.4
	South Australia (SA)	41	2.4	24	1.1
	Queensland (Qld)	695	40.5	867	41.2
	Western Australia (WA)	235	13.7	276	13.1
	New South Wales (NSW)	119	6.9	23	1.1
ARIA	Major cities	222	12.9	110	5.2
	Inner regional	48	2.8	29	1.4
	Outer regional	262	15.3	330	15.7
	Remote	277	16.1	338	16.1
	Very remote	774	45.1	1110	52.8
	Missing/other	135	7.9	186	8.8
IRDS quintile	1 (least disadvantaged)	38	2.2	22	1.0
	2	58	3.4	43	2.0
	3	101	5.9	86	4.1
	4	140	8.1	131	6.2
	5 (most disadvantaged)	895	52.1	1157	55.0
	Data not available	486	28.3	664	31.6
Previous record of ARF	Yes	762	44.4	1058	50.3
	No	956	55.6	1045	49.7

ARF, acute rheumatic fever; ARIA, accessibility and remoteness index of Australia; IRDS, index of relative socioeconomic disadvantage; RHD, rheumatic heart disease.

^aSee Supplementary material online, ItemS1 for a map of Australian jurisdictions.