Table 1 General characteristics of the study subjects

Total

23,470

18,476

12,215

17,130

17,228

Gender

 Male

10,848

(46.2)

8,508

(46.0)

5,752

(47.1)

7,900

(46.1)

7,904

(45.9)

 Female

12,622

(53.8)

9,968

(54.0)

6,463

(52.9)

9,230

(53.9)

9,324

(54.1)

Age (years)

 20~39

11,713

(49.9)

7,984

(43.2)

4,690

(38.4)

5,524

(32.2)

4,654

(27.0)

 40~64

9,550

(40.7)

8,409

(45.5)

5,830

(47.7)

8,510

(49.7)

8,429

(48.9)

 65 over

2,207

(9.4)

2,083

(11.3)

1,695

(13.9)

3,096

(18.1)

4,145

(24.1)

Marital status

 Single

4,191

(17.9)

3,254

(17.6)

1,989

(16.3)

3,017

(17.6)

3,077

(17.9)

 Married

16,831

(71.7)

13,192

(71.4)

8,879

(72.7)

11,797

(68.9)

11,576

(67.2)

Education

 Un education

1,536

(6.5)

940

(5.1)

515

(4.2)

609

(3.6)

600

(3.5)

 High school or less

21,691

(92.4)

11,311

(61.2)

6,908

(56.6)

8,735

(50.9)

8,620

(50.0)

 College degree (<4 years)

243

(1.0)

1,924

(10.4)

1,783

(14.6)

2,813

(16.4)

2,825

(16.4)

 College degree (≥4 years)

1,408

(6.0)

3,815

(20.6)

2,584

(21.2)

4,137

(24.2)

4,336

(25.2)

 Graduate degree

-

-

486

(2.6)

425

(3.5)

836

(4.9)

847

(4.9)

Monthly income (thousand won)

 <1,000

3,170

(49.5)

11,119

(60.1)

6,235

(51.0)

7,287

(42.5)

1,810

(20.2)

 ≥1,000 to  <2,000

2,338

(36.5)

4,325

(23.4)

3,069

(25.1)

3,976

(23.2)

1,334

(14.9)

 ≥2,000 to <3,000

645

(10.1)

1,935

(10.5)

1,623

(13.3)

2,843

(16.6)

1,504

(16.8)

 ≥3,000 to <4,000

181

(2.8)

708

(3.9)

730

(6.0)

1,506

(8.8)

1,163

(13.0)

 >4,000

68

(1.1)

389

(2.1)

558

(4.6)

1,518

(8.9)

3,151

(35.2)

Regular holiday

 Sunday

4,432

(41.3)

11,994

(67.6)

2,341

(32.6)

2,740

(27.3)

5,194

(50.9)

 Saturday off every other week

735

(6.8)

1,062

(6.0)

697

(9.7)

685

(6.8)

514

(5.0)

 2 days a week

760

(7.1)

1,620

(9.1)

2,405

(33.5)

4,586

(45.8)

1,883

(18.4)

 Only 1 day every 2 weeks

888

(8.3)

659

(3.7)

324

(4.5)

324

(3.2)

139

(1.4)

 Take a break from time to time without a set holiday

3,925

(36.6)

2,415

(13.6)

1,414

(19.7)

1,689

(16.9)

2,482

(24.3)

 Others

546

(2.3)

726

(3.9)

576

(4.7)

602

(3.5)

610

(3.5)

Working hours per week (hours)

 0~25

16,851

(71.8)

7,975

(43.2)

698

(9.0)

1,164

(11.0)

1,706

(15.8)

 26~50

2,907

(12.4)

5,758

(31.2)

4,159

(53.6)

6,456

(60.8)

6,754

(62.4)

 51~75

2,899

(12.4)

4,054

(21.9)

2,440

(31.5)

2,669

(25.1)

2,180

(20.1)

 76 over

813

(3.5)

689

(3.7)

457

(5.9)

337

(3.2)

182

(1.7)

The degree to feel lack of time

 Yes, always

5,571

(23.7)

4,338

(23.5)

3,337

(27.3)

3,868

(22.6)

3,558

(20.7)

 Yes, sometimes

9,820

(41.8)

7,773

(42.1)

4,885

(40.0)

5,729

(33.4)

5,303

(30.8)

 No, almost not

5,527

(23.5)

4,353

(23.6)

2,743

(22.5)

4,969

(29.0)

5,869

(34.1)

 No, not at all

2,552

(10.9)

2,012

(10.9)

1,250

(10.2)

2,564

(15.0)

2,498

(14.5)