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Table 1 Baseline characteristics of subjects

From: Prevalence and risk factors of Helicobacter pylori infection in Korea: Nationwide multicenter study over 13 years

 

Subjects without GI operation history

Subjects without history of H. pylorieradication

Asymptomatic subjects without history of H. pylorieradication

n

(%)

n

(%)

n

(%)

Total

 

19,272

(100.0)

15,560

(100.0)

10,796

(100.0)

Sex

Male

10,557

(54.8)

8,311

(53.4)

6,085

(56.4)

Female

8,715

(45.2)

7,249

(46.6)

4,711

(43.6)

 

Subtotal

19,272

(100.0)

15,560

(100.0)

10,796

(100.0)

Age (years)

16-19

34

(0.2)

33

(0.2)

17

(0.2)

20-29

798

(4.1)

777

(5.0)

421

(3.9)

30-39

2,853

(14.8)

2,607

(16.8)

1,659

(15.4)

40-49

5,087

(26.4)

4,198

(27.0)

2,913

(27.0)

50-59

6,176

(32.0)

4,709

(30.3)

3,403

(31.5)

60-69

3,358

(17.4)

2,493

(16.0)

1,840

(17.0)

≥70

966

(5.0)

743

(4.8)

543

(5.0)

Subtotal

19,272

(100.0)

15,560

(100.0)

10,796

(100.0)

Geographic area

Seoul

10,755

(55.8)

8,515

(54.8)

5,829

(54.0)

Gyeonggi

3,025

(15.7)

2,403

(15.5)

1,683

(15.6)

Chungcheong

863

(4.5)

740

(4.8)

536

(5.0)

Kyungsang

1,630

(8.5)

1,313

(8.4)

914

(8.5)

Cholla

1,807

(9.4)

1,553

(10.0)

1,194

(11.1)

Kangwon

588

(3.1)

466

(3.0)

331

(3.1)

Jeju

589

(3.1)

555

(3.6)

299

(2.8)

Subtotal*

19,257

(100.0)

15,545

(100.0)

10,786

(100.0)

Household income**

low

2,114

(12.5)

1,838

(13.5)

1,247

(13.2)

medium

11,049

(65.2)

8,843

(65.1)

6,197

(65.6)

high

3,781

(22.3)

2,910

(21.4)

2,005

(21.2)

Subtotal*

16,944

(100.0)

13,591

(100.0)

9,449

(100.0)

Education level***

low

1,743

(9.5)

1,458

(9.9)

984

(9.7)

medium

3,667

(20.0)

3,004

(20.4)

1,981

(19.4)

high

12,928

(70.5)

10,250

(69.7)

7,223

(70.9)

Subtotal*

18,338

(100.0)

14,712

(100.0)

10,188

(100.0)

Body mass index (kg/m2)

<18.5

840

(4.4)

736

(4.8)

412

(3.9)

18.5 - <23.0

7,696

(40.6)

6,245

(40.7)

4,237

(39.8)

23.0 - <25.0

4,818

(25.4)

3,821

(24.9)

2,759

(25.9)

≥25.0

5,625

(29.6)

4,530

(29.5)

3,249

(30.5)

Subtotal*

18,979

(100.0)

15,332

(100.0)

10,657

(100.0)

Cholesterol (mg/dl)

<240

16,671

(90.5)

13,417

(90.4)

9,228

(90.1)

≥240

1,755

(9.5)

1,428

(9.6)

1,013

(9.9)

Subtotal*

18,426

(100.0)

14,845

(100.0)

10,241

(100.0)

TG (mg/dl)

<150

14,651

(79.7)

11,873

(80.1)

8,118

(79.4)

≥150

3,736

(20.3)

2,941

(19.9)

2,102

(20.6)

Subtotal*

18,387

(100.0)

14,814

(100.0)

10,220

(100.0)

Glucose (mg/dl)

<100

12,999

(70.7)

10,667

(72.0)

7,206

(70.5)

100 - <126

4,438

(24.1)

3,399

(22.9)

2,459

(24.1)

≥126

955

(5.2)

747

(5.0)

555

(5.4)

Subtotal*

18,392

(100.0)

14,813

(100.0)

10,220

(100.0)

Family history of gastric cancer

No

16,470

(86.6)

13,418

(87.5)

9,473

(88.2)

Yes

2,556

(13.4)

1,910

(12.5)

1,270

(11.8)

Subtotal*

19,026

(100.0)

15,328

(100.0)

10,743

(100.0)

GI symptoms

No

13,121

(68.8)

10,796

(70.3)

  

Yes

5,954

(31.2)

4,568

(29.7)

  

Subtotal*

19,075

(100.0)

15,364

(100.0)

  
  1. *Subjects with missing values were excluded.
  2. **Household income was classified as low (less than US $ 3,000), medium (US $ 3,000 to 10,000), or high (more than US $ 10,000).
  3. ***Education level was classified as low (middle school graduates or less), middle (high school graduates or university dropouts), or high (university graduates or graduates of a postgraduate course).
  4. GI gastrointestinal.
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BMC Gastroenterology

ISSN: 1471-230X

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