Table 3 Distribution of underlying disease among severe COVID-19 patients in the southeast Iran

Dialysis

 No

401 (94.8)

140 (34.9)

1

 Yes

12 (5.2)

5 (41.7)

1.33 (0.42,4.27)^NS

Cardiovascular disease

 No

359 (86.9)

116 (32.3)

1

 Yes

54 (13.1)

29 (53.7)

2.43 (1.36,4.34)*

Diabetes

 No

342 (82.8)

114 (33.3)

1

 Yes

71 (17.2)

31 (43.7)

1.55 (0.92,2.61) ^NS

Liver disease

 No

405 (98)

139 (34.3)

1

 Yes

8 (2)

6 (75.0)

5.74 (1.14,28.82)*

Chronic kidney disease

 No

400 (96.8)

138 (34.5)

1

 Yes

13 (3.2)

7 (53.8)

2.22 (0.73,6.72) ^NS

Chronic neurological disease

 No

404 (97.8)

143 (35.4)

1

 Yes

9 (2.2)

2 (22.2)

0.52 (0.11,2.54) ^NS

Chronic pulmonary disease

 No

374 (90.5)

121 (32.4)

1

 Yes

39 (9.5)

24 (61.5)

3.34 (1.69,6.61)*

Malignant Disease

 No

411 (99.5)

144 (35.0)

1

 Yes

2 (0.5)

1 (50.0)

1.85 (0.12,29.86) ^NS

Hypertension

 No

316 (76.5)

99 (31.3)

1

 Yes

97 (23.5)

46 (47.4)

1.98 (1.24,3.14)*

Cerebrovascular disease

 No

404 (97.8)

140 (34.7)

1

 Yes

9 (2.2)

5 (55.6)

2.36 (0.62,8.92) ^NS

Chronic blood disease

 No

405 (98)

142 (35.1)

1

 Yes

8 (2)

3 (37.5)

1.11 (0.26,4.72) ^NS

Asthma

 No

392 (94.9)

136 (34.7)

1

 Yes

21 (5.1)

9 (42.9)

1.41 (0.58,3.43) ^NS

Congestive heart disease

 No

411 (99.5)

143 (34.8)

 Yes

2 (0.5)

2 (100.0)

Rheumatologic disease

 No

401 (97.1)

136 (33.9)

1

 Yes

12 (2.9)

9 (75.0)

5.85 (1.56,21.95)*

Organ transplant

 No

411 (99.5)

143 (34.8)

 Yes

2 (0.5)

2 (100.0)

Defect immune system

 No

400 (96.8)

140 (35.0)

1

 Yes

13 (3.2)

5 (38.5)

1.16 (0.37,3.62) ^NS