Table 2.

The included studies of ACE I/D polymorphism with COVID-19 severity.

Study	Year	Country	Race	Cases/controls	Allele for cases		Allele for controls		Genotypes for cases			Genotypes for controls			HWE
					D	I	D	I	DD	ID	II	DD	ID	II
Gómez	2020	Spain	Caucasians	67/536	93	41	646	426	31	31	5	195	256	85	0.94
Mohammadarian	2022	Iran	Asians	37/91	43	31	103	79	6	31	0	33	37	21	0.10
Hamid	2021	Iran	Asians	152/244	226	78	263	225	84	58	10	70	123	51	0.82