Table 1.

Different comorbidities in SARS-CoV-2 infected patients.

Sl. no	Investigator	Total number of patients	Diabetes (%)	Hypertension (%)	Cardiovascular disease (%)	Chronic obstructive pulmonary disease (%)
Comorbidities in coronavirus infected patients in China
1.	Liu et al. [25]	61	8.2	19.7	1.6	8.2
2.	Guan et al. [26]	1099	7.4	15.0	3.8	1.1
3.	Huang et al. [27]	41	19.5	14.6	15.0	2.4
4.	Chen et al. [17]	99	12.1	NR	40.0	1.0
5.	Wang et al. [28]	138	10.1	31.2	19.6	2.9
6.	Zhou et al. [29]	191	19.0	30.0	8.0	3.0
7.	Zhang et al. [12]	140	12.1	30.0	8.6	1.4
8.	Yang et al. [30]	52	17.0	NR	23.0	8.0
9.	Wu et al. [31]	201	10.9	19.4	4.0	2.5
10.	Guo et al. [32]	187	15.0	32.6	11.2	2.1
11.	Liu et al. [33]	137	10.2	9.5	7.3	1.5
12.	Chen et al. [34]	274	17.0	34.0	8.0	7.0
13.	CDC (China) [20]	20,982	5.3	12.8	4.2	2.4
Comorbidities in coronavirus infected patients in Italy
1.	Onder et al. [21]	355	35.5	NR	42.5	NR
2.	CSG (Italy)a [23]	481	33.9	73.8	30.1	13.7
Comorbidities in coronavirus infected patients in the USA
1.	Bhatraju et al. [22]	24	58.0	NR	NR	4.0
2.	CDC (USA) [24]	7162	10.9	NR	9.0	9.2

^aCOVID-19 Surveillance Group of Italy.