Table 1 The yearly number of ICU admissions and incidence in 2020 and 2021 compared to the mean yearly incidence of the reference years (2017–2019) by incidence rate ratios (IRR) with 95% confidence intervals

ICD code

Explanation

N

Inc

N

Inc

IRR (95% CI)

N

Inc

IRR (95% CI)

A. B

Infectious and parasitic diseases

273

37.8

266

36.6

0.97

(0.82–1.14)

250

34.2

0.90 (0.76–1.07)

C. D

Neoplasms. diseases of the blood

608

84.4

534

73.5

0.87

(0.78–0.98)

555

75.8

0.90 (0.80–1.01)

E

Endocrine. nutritional and metabolic diseases

647

89.7

591

81.3

0.91

(0.81–1.01)

602

82.3

0.92 (0.82–1.02)

F

Mental. Behavioral and Neurodevelopmental disorders

212

29.4

202

27.8

0.95

(0.78–1.15)

221

30.2

1.03 (0.85–1.24)

G

Diseases of the nervous system

219

30.4

194

26.7

0.88

(0.72–1.06)

352

48.1

1.58 (1.34–1.87)

I

Diseases of the circulatory system

1542

213.8

1429

196.7

0.92

(0.86–0.99)

1711

233.8

1.09 (1.02–1.17)

J

Diseases of the respiratory system

163

22.6

125

17.2

0.76

(0.60–0.96)

116

15.9

0.70 (0.55–0.89)

K

Diseases of the digestive system

81

11.2

114

15.7

1.40

(1.05–1.86)

74

10.1

0.90 (0.66–1.23)

M

Diseases of the musculoskeletal system and connective tissue

21

3.0

13

1.8

0.60

(0.30–1.21)

16

2.2

0.74 (0.39–1.41)

N

Diseases of the genitourinary system

17

2.4

20

2.8

1.17

(0.61–2.23)

22

3.0

1.28 (0.68–2.40)

O

Pregnancy. childbirth and the puerperium

19

2.6

18

2.5

0.94

(0.49–1.79)

18

2.5

0.93 (0.49–1.78)

S

Injury. poisoning and other external causes

221

30.7

238

32.8

1.07

(0.89–1.28)

196

26.8

0.87 (0.72–1.06)

T

Injury. poisoning and other external causes

174

24.2

168

23.1

0.96

(0.77–1.18)

220

30.1

1.24 (1.02–1.52)

U0*

Covid patients

0

110

15.1

141

19.3

W

External causes of morbidity

437

60.6

372

51.2

0.84

(0.74–0.97)

390

53.3

0.88 (0.77–1.01)

R. H. L. Z

Other and unspecified

572

79.3

486

66.9

0.84

(0.75–0.95)

569

77.8

0.98 (0.87–1.10)