Table 4. Changes in the distribution of diseases among pediatric inpatients during the COVID-19 pandemic (January–April 2020 vs. January–April 2019).

Hospital level	Diagnosis	2019 (comparison)			2020 (COVID-19)		P
		N	%		N	%
First-level	Respiratory infection	2,436	93.84		924	90.23	<0.0001
	Other infections	132	5.08		67	6.54
	Injury	6	0.23		4	0.39
	Other diseases	22	0.85		29	2.83
Second-level	Respiratory infection	27,709	72.44		11,378	63.21	<0.0001
	Other infections	5,197	13.59		2,648	14.71
	Injury	191	0.50		165	0.92
	Other diseases	5,152	13.47		3,809	21.16
Third-level	Respiratory infection	22,969	50.09		9,917	37.39	<0.0001
	Other infections	5,605	12.22		3,381	12.75
	Injury	787	1.72		892	3.36
	Other diseases	16,497	35.97		12,334	46.50
All	Respiratory infection	53,114	61.26		22,219	48.78	<0.0001
	Other infections	10,934	12.61		6,096	13.38
	Injury	984	1.13		1,061	2.33
	Other diseases	21,671	24.99		16,172	35.51