Table 2.

Characteristics of Included Studies

Study	Year	Patients (N)			Age (y)	Hypertension (N)	Cardiac Disease (N)	Diabetes Mellitus (N)
		All	Male	Female
COVID‐19
NCPERET et al 12 , *	2020	44 672	22 981	21 691	45.9	2683/20 812	873/20 812	1102/20 812
Di Qi et al 13	2020	267	149	118	48.0	20	NA	26
Guyi Wang et al 14	2020	242	119	123	45.0	36	9	15
Min Cao et al 15	2020	198	101	97	50.1	42	12	15
Songqiao Liu et al 16	2020	620	326	294	44.48	96	13	40
Xu Chen et al 17	2020	291	145	146	46.0	39	12	22
Zhibing Lu et al 18	2020	123	61	62	57.8	41	15	14
Yucai Hong et al 19	2020	140	71	69	45.66	36	4	12
Sijiao Wang et al 20	2020	165	92	73	44.0	24	8	12
Yongtao Zheng et al 21	2020	30	13	17	44.5	3	1	3
Bo Yuan et al 22	2020	417	198	219	45.4	63	28	32
Christopher M. Petrilli et al 23	2020	4103	2072	2031	52.0	983	235	614
Total/weighted average (SD)		51 268	26 328	24 940	46.41 (1.79)
SARS
Hsiao‐Ling Chang et al 25 )	2006	346	128	218	42.3	23	19	30
Hai‐Ying Lu et al 24	2005	801	389	412	37.04	21	8	9
Ping Tim Tsui et al 27	2003	323	127	196	41	16	3	8
Nelson Lee et al 26	2003	138	66	72	39.3	NA	4	5
Total/weighted average (SD)		1608	710	898	39.16 (2.25)
MERS
Khalid A. Alburikan et al 28	2020	348	216	132	52	73	24	76
Yaseen M. Arabi et al 32	2014	12	8	4	59	6	4	8
Ziad A. Memish et al 33	2014	12	6	6	35.92	4	NA	5
Jaffar A. Al‐Tawfiq et al 30	2014	17	11	6	60.7	NA	11	13
WHO 31	2013	161	104	57	50.0	NA	12	16
Abdullah Assiri et al 29	2013	47	36	11	64.5	16	13	32
Total/weighted average (SD)		597	381	216	52.51 (4.64)

COVID‐19 indicates coronavirus disease 2019; MERS, Middle East respiratory syndrome; NA, not available; NCPERET, Novel Coronavirus Pneumonia Emergency Response Epidemiology Team; SARS, severe acute respiratory syndrome; and WHO, World Health Organization.

^*Only 20 812 patients were used to calculate percentages of hypertension, cardiac disease, and diabetes mellitus.