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Table 2 General characteristics of cases at ICU admission

From: Risk factors for severe COVID-19 in the young—before and after ICU admission

 

 < 50 years

50–64 years

 > 65 years

Number (n)

817

1797

2307

Age (mean (SD))

40.21 (7.85)

57.77 (4.23)

72.76 (5.27)

Sex (women (%))

281 (34.4)

496 (27.6)

670 (29.0)

Income category (%)

 1

455 (56.0)

690 (38.5)

1001 (43.5)

 2

251 (30.9)

584 (32.6)

691 (30.0)

 3

106 (13.1)

520 (29.0)

611 (26.5)

Education (%)

 Primary

178 (23.2)

406 (23.0)

801 (36.0)

 Secondary

369 (48.2)

852 (48.2)

920 (41.3)

 Post-secondary

219 (28.6)

510 (28.8)

507 (22.8)

Region of birth (%)

 Africa

64 (7.8)

86 (4.8)

63 (2.7)

 Asia

222 (27.2)

383 (21.3)

256 (11.1)

 EU15, excl. Nordic

5 (0.6)

28 (1.6)

65 (2.8)

 Europa, excl. EU15 and Nordic

78 (9.5)

160 (8.9)

198 (8.6)

 North America

2 (0.2)

12 (0.7)

5 (0.2)

 Nordic countries, excl. Sweden

4 (0.5)

73 (4.1)

125 (5.4)

 Oceania

0 (0.0)

1 (0.1)

0 (0.0)

 Soviet Union

0 (0.0)

1 (0.1)

2 (0.1)

 Sweden

425 (52.0)

1 016 (56.5)

1 548 (67.1)

 South America

16 (2.0)

34 (1.9)

44 (1.9)

 Unknown

1 (0.1)

3 (0.2)

1 (0)

Pre-existing diagnoses (%)

 Hypertension

84 (10.3)

507 (28.2)

1162 (50.4)

 Kidney disease

21 (2.6)

79 (4.4)

142 (6.2)

 Rheumatoid arthritis

11 (1.3)

49 (2.7)

72 (3.1)

 Systemic inflammatory disease

11 (1.3)

42 (2.3)

83 (3.6)

 Inflammatory bowel disease

14 (1.7)

25 (1.4)

42 (1.8)

 Venous thromboembolism

21 (2.6)

85 (4.7)

164 (7.1)

 Obesity

262 (32.1)

515 (28.7)

467 (20.2)

 Chronic obstructive pulmonary disease

4 (0.5)

47 (2.6)

180 (7.8)

 Myocardial infarction

6 (0.7)

71 (4.0)

198 (8.6)

 Heart failure

9 (1.1)

65 (3.6)

222 (9.6)

 Atrial fibrillation

8 (1.0)

81 (4.5)

337 (14.6)

 Type 1 diabetes

19 (2.3)

62 (3.5)

121 (5.2)

 Asthma

58 (7.1)

149 (8.3)

181 (7.8)

 Type 2 diabetes

69 (8.4)

287 (16.0)

592 (25.7)

 Angina

4 (0.5)

65 (3.6)

215 (9.3)

 Malignancy

22 (2.7)

97 (5.4)

312 (13.5)

  1. Diagnoses are defined as pre-existing if appearing > 30 days before ICU-admission