Table 2.

Baseline characteristics of all study participants (n=12 860)

		Country income						P value
		HICs (n=3819)		LMICs (n=9041)		Total
		n	%	n	%	n	%
Age*	<1 year	1124	29.4	1574	17.4	2698	21.0	<0.001
	1–<5 years	707	18.5	1887	20.9	2594	20.2
	5–<12 years	796	20.8	1621	17.9	2417	18.8
	12–<17 years	770	20.2	2311	25.6	3081	24.0
	≥17 years	422	11.1	1648	18.2	2070	16.1
Sex*	Male	2026	53.1	4497	49.8	6523	50.8	0.002
	Female	1788	46.9	4537	50.2	6325	49.2
Ethnicity*	Black or African-American	223	5.8	4747	52.5	4970	38.6	<0.001
	Missing and unknown	1221	32.0	3509	38.8	4730	36.8
	White	1624	42.5	186	2.1	1810	14.1
	Asian	561	14.7	168	1.9	729	5.7
	Mixed and others	190	5.0	431	4.8	621	4.8
COVID-19 status*	Confirmed	2786	73	6175	68.3	8961	69.7	<0.001
	Suspect	1033	27	2866	31.7	3899	30.3
Outcome*	Discharged	3423	89.6	7967	88.1	11 390	88.6	<0.001
	Still in hospital	140	3.7	357	3.9	497	3.9
	Transferred	192	5.0	356	3.9	548	4.3
	Death	64	1.7	361	4.0	425	3.3

*Significant with p value <0.05 using χ² test.

HICs, high-income countries; LMICs, low- to middle-income countries.