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Table 1 General characteristics by unmet dental need

From: Long working hours are associated with unmet dental needs in south Korean male adults who have experienced dental pain

Variable

N

%

Male (n = 4173)

Female (n = 5355)

No unmet need

Unmet need

 

No unmet need

Unmet need

 

N

%

N

%

p-value

N

%

N

%

p-value

Total

9528

100.0

2524

60.5

1649

39.5

 

2995

55.9

2360

44.1

 

Working hours per week

      

< 0.001

    

0.030

 No work

2816

29.6

510

67.5

245

32.5

 

1208

58.6

853

41.4

 

  < 40

3346

35.1

844

61.6

527

38.4

 

1083

54.8

892

45.2

 

 41–48

1100

11.5

365

59.1

253

40.9

 

259

53.7

223

46.3

 

 49–60

1366

14.3

516

58.2

371

41.8

 

258

53.9

221

46.1

 

  > 60

900

9.4

289

53.3

253

46.7

 

187

52.2

171

47.8

 

Age

      

< 0.001

    

0.160

 20–29

1076

11.3

245

59.3

168

40.7

 

353

53.2

310

46.8

 

 30–39

1678

17.6

370

54.2

313

45.8

 

537

54.0

458

46.0

 

 40–49

1692

17.8

448

59.7

303

40.3

 

539

57.3

402

42.7

 

 50–59

2019

21.2

527

56.4

407

43.6

 

595

54.8

490

45.2

 

 60–65

1058

11.1

311

64.8

169

35.2

 

335

58.0

243

42.0

 

 65-

2005

21.0

623

68.3

289

31.7

 

636

58.2

457

41.8

 

Private insurance

      

0.404

    

0.184

 No

2551

26.8

711

61.5

445

38.5

 

759

54.4

636

45.6

 

 Yes

6977

73.2

1813

60.1

1204

39.9

 

2236

56.5

1724

43.5

 

Health insurance type

      

< 0.001

    

< 0.001

 NHI (local)

3215

33.7

841

57.4

623

42.6

 

921

52.6

830

47.4

 

 NHI (employee’s)

5971

62.7

1629

62.7

969

37.3

 

1966

58.3

1407

41.7

 

 Medical aid

342

3.6

54

48.6

57

51.4

 

108

46.8

123

53.2

 

Household income

      

0.035

    

< 0.001

 Low

1817

19.1

418

58.0

303

42.0

 

564

51.5

532

48.5

 

 low - moderate

2471

25.9

634

59.9

425

40.1

 

764

54.1

648

45.9

 

 Moderate -High

2599

27.3

693

59.1

479

40.9

 

816

57.2

611

42.8

 

 High

2641

27.7

779

63.8

442

36.2

 

851

59.9

569

40.1

 

Region of residence

      

0.001

    

0.736

 Urban

7417

77.8

2005

61.8

1239

38.2

 

2339

56.1

1834

43.9

 

 Rural

2111

22.2

519

55.9

410

44.1

 

656

55.5

526

44.5

 

Occupation type

      

0.065

    

0.308

 Office

3417

35.9

919

62.8

544

37.2

 

1108

56.7

846

43.3

 

 Labor

5181

54.4

1464

59.1

1015

40.9

 

1514

56.0

1188

44.0

 

 Service

930

9.8

141

61.0

90

39.0

 

373

53.4

326

46.6

 

Self-assessment of dental health

     

< 0.001

    

< 0.001

 Good

716

7.5

297

83.4

59

16.6

 

286

79.4

74

20.6

 

 Moderate

3071

32.2

890

71.9

347

28.1

 

1226

66.8

608

33.2

 

 Bad

5741

60.3

1337

51.8

1243

48.2

 

1483

46.9

1678

53.1

 

Reason for unmet dental needs*

 

< 0.001

    

< 0.001

 No unmet need

5519

57.9

2524

100.0

0

0.0

 

2995

100.0

0

0.0

 

 Lack of ability to pay

  

0

0.0

590

35.8

 

0

0.0

931

39.4

 

 Lack of ability to reach

  

0

0.0

543

32.9

 

0

0.0

617

43.2

 

 Lack of ability to perceive

  

0

0.0

516

31.3

 

0

0.0

812

28.1

 

Number of family members

      

0.018

    

0.063

 More than one

8654

90.8

2367

61.0

1515

39.0

 

2690

56.4

2082

43.6

 

 Alone

874

9.2

157

54.0

134

46.0

 

305

52.3

278

47.7

 

Level of education

      

0.020

    

0.644

 Middle school

3457

36.3

758

60.8

488

39.2

 

1223

55.3

988

44.7

 

 High school

3049

32.0

829

57.8

606

42.2

 

902

55.9

712

44.1

 

  ≥ college

3022

31.7

937

62.8

555

37.2

 

870

56.9

660

43.1

 

Usage of dental care tools

      

< 0.001

    

< 0.001

 No

5363

56.3

1481

56.9

1120

43.1

 

1423

51.5

1339

48.5

 

 Yes

4165

43.7

1043

66.3

529

33.7

 

1572

60.6

1021

39.4

 

Number of times brushing teeth per day

  

0.004

    

0.069

    

 0–1

1240

13.0

419

55.9

331

44.1

 

255

52.0

235

48.0

 

  ≥ 2

8288

87.0

2105

61.5

1318

38.5

 

2740

56.3

2125

43.7

 

Dental checkup within last one year

     

< 0.001

    

< 0.001

 No

6546

68.7

1596

56.9

1207

43.1

 

1900

50.8

1843

49.2

 

 Yes

2982

31.3

928

67.7

442

32.3

 

1095

67.9

517

32.1

 

Smoke

      

< 0.001

    

< 0.001

 No

5424

56.9

500

67.1

245

32.9

 

2666

57.0

2013

43.0

 

 Current smoker

2104

22.1

947

53.7

815

46.3

 

162

47.4

180

52.6

 

 Past smoker

2000

21.0

1077

64.6

589

35.4

 

167

50.0

167

50.0

 

Drink

      

0.148

    

0.938

 No drink

3579

37.6

444

61.5

278

38.5

 

1110

56.2

864

43.8

 

 Light drink

2363

24.8

1135

61.7

704

38.3

 

1594

55.8

1263

44.2

 

 Heavy drink

2136

22.4

945

58.6

667

41.4

 

291

55.5

233

44.5

 

Average hours of sleep per week

      

0.036

    

< 0.001

  < 5

478

5.0

86

55.1

70

44.9

 

159

49.4

163

50.6

 

 5–6

3772

39.6

980

58.4

698

41.6

 

1125

53.7

969

46.3

 

 7–8

4588

48.2

1297

62.5

777

37.5

 

1474

58.6

1040

41.4

 

  > 8

690

7.2

161

60.8

104

39.2

 

237

55.8

188

44.2

 

BMI

      

0.113

    

0.130

  ≤ 25

4275

44.9

1552

59.6

1054

40.4

 

2087

56.6

1599

43.4

 

  > 25

3236

34.0

972

62.0

595

38.0

 

908

54.4

761

45.6

 

Year

      

< 0.001

    

< 0.001

 2010

1489

15.6

357

54.0

304

46.0

 

419

50.6

409

49.4

 

 2011

1335

14.0

329

57.1

247

42.9

 

408

53.8

351

46.2

 

 2012

1789

18.8

459

58.2

329

41.8

 

530

52.9

471

47.1

 

 2013

1769

18.6

486

62.6

290

37.4

 

589

59.3

404

40.7

 

 2014

1529

16.0

448

67.4

217

32.6

 

497

57.5

367

42.5

 

 2015

1617

17.0

445

62.9

262

37.1

 

552

60.7

358

39.3

 
  1. * The ratios of each reason represents the percentage compared to the number of people who showed unmet needs