Table 3 Number and percentage of hospital discharges by the ICD-9-CM main diagnosis group with the odds ratio (OR) and adjusted odds ratio (AOR) with a 95% confidence interval (CI) for foreign citizens from low-income countries (FCLICs) and high-income countries (FCHICs) compared with autochthonous citizens (ACs)

Circulatory system

ACs

7,179

18.6

1

-

1

-

FCHICs

326

25.8

1.52

(1.34-1.73)

1.55

(1.35-1.77)

FCLICs

261

5.5

0.44

(0.39-0.50)

0.89

(0.78-1.02)

Digestive system

ACs

4,861

12.6

1

-

1

-

FCHICs

150

11.9

0.99

(0.72-1.01)

1.09

(0,92-1.21)

FCLICs

340

11.5

0.90

(0.81-1.01)

1.01

(0.89-1.14)

Pregnancy, childbirth & puerperium

ACs

3,815

9.9

1

-

1

-

FCHICs

103

8.1

0.98

(0.96-0.99)

0.20

(0.68-1.61)

FCLICs

937

31.7

3.60

(3.35-3.86)

1.33

(1.29-1.59)

Neoplasms

ACs

4,393

11.4

1

-

1

-

FCHICs

171

13.5

1.21

(1.03-1.42)

1.20

1.02-1.42)

FCLICs

250

8.5

0.73

(0.64-0.83)

1.01

(0.88-1.16)

Respiratory system

ACs

4,069

10.5

1

-

1

-

FCHICs

69

5.5

0.50

(0.39-0.63)

0.48

(0.37-0.61)

FCLICs

189

6.4

0.59

(0.51-0.69)

0.89

(0,76-1.05)

Injury and poisoning

ACs

3,156

8.2

1

-

1

-

FCHICs

135

10.7

1.33

(1.11-1.58)

1.33

(1.11-1.80)

FCLICs

255

8.6

1.05

(0.93-1.19)

1.19

(1.03-1.36)

Genitourinary system

ACs

2,211

5.7

1

-

1

-

FCHICs

62

4.9

0.99

(0.97-1.00)

0.93

(0.69-1,24)

FCLICs

182

6.2

1.07

(0.93-1.24)

1.07

(0.91-1.26)

Nervous system & sense organs

ACs

2,221

5.8

1

-

1

-

FCHICs

66

5.2

0.90

(0.71-1.16)

0.88

(0.68-1.13)

FCLICs

137

4.6

0.80

(0.68-0.95)

0.85

(0.71-1.02)

Musculoskeletal system & connective tissue

ACs

1,558

4.0

1

-

1

-

FCHICs

34

2.7

0.66

(0.47-0.93)

0.66

(0.47-0.93)

FCLICs

95

3.2

0.88

(0.66-0.97)

0.81

(0.65-1.00)

Symptoms, signs & ill-defined conditions

ACs

1,345

3.5

1

-

1

-

FCHICs

48

3.4

0.92

(0.69-1.21)

0.92

(0.69-1.25)

FCLICs

76

2.6

0.74

(0.59-0.93)

0.79

(0.66-1.00)

Infectious & parasitic diseases

ACs

890

2.3

1

-

1

-

FCHICs

29

2.3

0.99

(0.69-1.93)

0.99

(0.68-1.45)

FCLICs

67

2.3

0.98

(0.78-1.24)

1.30

(1.00-1.69)

Endocrine, nutritional and metabolic diseases & immunity disorders

ACs

908

2.4

1

-

1

-

FCHICs

19

1.5

0.64

(0.41-1.00)

0.64

(0.40-1.01)

FCLICs

51

1.7

0.74

(0.56-0.97)

0.77

(0.57-1.03)

Mental disorders

ACs

877

2.3

1

-

1

-

FCHICs

23

1.8

0.80

(0.53-1.20)

0.76

(0.50-1.16)

FCLICs

34

1.2

0.52

(0.37-0.72)

0.32

(0.22-0.45)

Skin & subcutaneous tissue

ACs

563

1.5

1

-

1

-

FCHICs

12

0.9

0.64

(0.36-1.15)

0.65

(0.36-1.159

FCLICs

28

0.9

0.64

(0.44-0.94)

0.45

(0.34-0.73)

Blood & blood-forming organs

ACs

408

1.1

1

-

1

-

FCHICs

13

1.0

0.97

(0.57-1.67)

0.97

(0.56-1.69)

FCLICs

23

0.8

0.74

(0.50-1.11)

0.93

(0.60-1,43)

Congenital anomalies & conditions in the perinatal period

ACs

119

0.3

1

-

1

-

FCHICs

3

0.2

0.77

(0.25-3.37)

0.77

(0.27-2.40)

FCLICs

22

0.7

2.20

(1.50-3.23)

1.27

(0.79-2.04)