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Table 1 Sociodemographic characteristics and comorbidities of the hepatitis C virus (HCV)-infected and HCV-uninfected control groups in Taiwan, 1998–2004 (n = 15910)

From: Hepatitis C virus itself is a causal risk factor for chronic kidney disease beyond traditional risk factors: a 6-year nationwide cohort study across Taiwan

Variables

HCV-infected group (n = 3182) N (%)

Control group (n = 12728) N (%)

p

Gender

  

1.0000

 Male

1619 (50.9)

6476 (50.9)

 

 Female

1563 (49.1)

6252 (49.1)

 

Age (year)

  

1.0000

 18–39

1319 (41.5)

5276 (41.5)

 

 40–49

874 (27.5)

3496 (27.5)

 

 50–59

552 (17.3)

2208 (17.3)

 

 60–69

315 (9.9)

1260 (9.9)

 

 ≧70

122 (3.8)

488 (3.8)

 

Diabetes

  

<0.0001

 Yes

0 (0)

981 (7.7)

 

 No

3182 (100)

11747 (92.3)

 

Hypertension

  

<0.0001

 Yes

0 (0)

1726 (13.6)

 

 No

3182 (100)

11002 (86.4)

 

Coronary heart disease

  

<0.0001

 Yes

0 (0)

838 (6.6)

 

 No

3182 (100)

11890 (93.4)

 

Hyperlipidemia

  

<0.0001

 Yes

0 (0)

1031 (8.1)

 

 No

3182 (100)

11697 (91.9)

 

Liver Cirrhosis

  

<0.0001

 Yes

0 (0)

96 (0.8)

 

 No

3182 (100)

12632 (99.2)

 

Geographic region

  

<0.0001

 Northern

1017 (32.0)

6157 (48.4)

 

 Central

922 (29.0)

2916 (22.9)

 

 Eastern

81 (2.5)

292 (2.3)

 

 Southern

1162 (36.5)

3362 (26.4)

 

Urbanization level

  

<0.0001

 Urban

818 (25.7)

4076 (32.0)

 

 Suburban

1450 (45.6)

5891 (46.3)

 

 Rural

914 (28.7)

2760 (21.7)

 

Enrollee category

  

<0.0001

 1

1355 (42.6)

5978 (47.0)

 

 2

107 (3.4)

270 (2.1)

 

 3

1250 (39.3)

4367 (34.3)

 

 4

470 (14.8)

2113 (16.6)

 

No. of health care visits in 1 year before study entry

  

<0.0001

 <10

794 (25.0)

5199 (40.8)

 

 11-20

974 (30.6)

3761 (29.5)

 

 21-30

660 (20.7)

1977 (15.5)

 

 31-40

370 (11.6)

850 (6.7)

 

 ≧41

384 (12.1)

941 (7.4)