Table 1 Demographic characteristics of patients with SCZ and non-SCZ controls.

From: Assessing whether the association between rheumatoid arthritis and schizophrenia is bidirectional: A nationwide population-based cohort study

Variable

SCZ

p-value

No

Yes

n = 235382

n = 58847

n

%

n

%

Gender a

    

0.99

Female

110888

47.11

27723

47.11

 

Male

124494

52.89

31124

52.89

 

Age at baseline, years a

    

0.99

<25

44086

18.73

11023

18.73

 

25–50

147296

62.58

36824

62.58

 

>50

44000

18.69

11000

18.69

 

Mean (SD)b

37.84 (13.84)

37.89 (13.74)

0.48

Comorbidities a

Hypertension

27543

11.70

7011

11.91

0.15

Dyslipidemia

21521

9.14

3963

6.73

<0.01

COPD

9431

4.01

3648

6.20

<0.01

Diabetes mellitus

12961

5.51

4051

6.88

<0.01

Asthma

8440

3.59

2608

4.43

<0.01

Chronic kidney disease

1103

0.47

294

0.50

0.32

Cerebrovascular disease

7375

3.13

2620

4.45

<0.01

Alcohol use disorder

557

0.24

1739

2.96

<0.01

Liver cirrhosis

21841

9.28

6673

11.34

<0.01

Malignancies

33799

14.36

6417

10.90

<0.01

Coronary artery disease

7194

3.06

1915

3.25

0.01

Follow-up period, years, median c

7.73

7.05

<0.01

  1. aχ2 test; bt-test; cWilcoxon’s rank-sum test. SCZ: schizophrenia; SD: standard deviation; COPD: chronic obstructive pulmonary disease.