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Table 3 Relationship between subject characteristics and occupational injuries by injury risk levels

From: Relationship between occupational injuries and the provision of safety and health information: data from the 4th Korean working conditions survey

Variables

Occupational injuries (Low-risk group)

Occupational injuries (High-risk group)

Total

Yes

p-valuec

Total

Yes

p-valuec

Na

Na

%b

Na

Na

%b

General characteristics

Age (years)

 15–29

2746

6

0.2

< 0.001

708

11

1.7

0.012

 30–39

4811

16

0.3

< 0.001d

1340

45

3.2

0.986d

 40–49

5284

19

0.3

 

1808

72

4.3

 

 50–59

3349

21

0.5

 

1571

44

2.5

 

 ≥ 60

1987

20

0.8

 

923

22

2.7

 

Sex

 Male

8640

38

0.4

0.829

3999

127

3.3

0.466

 Female

9537

44

0.4

 

2351

67

2.7

 

Education level

 Middle school or below

1887

24

1.1

< 0.001

1109

31

2.7

0.130

 High school

6266

31

0.4

< 0.001d

3189

111

3.6

0.393d

 College or above

10,024

27

0.2

 

2052

52

2.5

 

Monthly income (KRW 10,000)

 < 150

5501

37

0.5

0.018

1934

39

1.9

0.006

 150–249

6198

19

0.3

0.053d

2312

89

3.9

0.056d

 250–399

4773

17

0.3

 

1694

55

3.4

 

 ≥ 400

1705

9

0.3

 

410

11

2.7

 

Occupational characteristics

Occupational type

 White-collar

8943

25

0.2

< 0.001

1285

28

2.3

0.119

 Pink-collar

4865

20

0.3

 

1576

50

3.5

 

 Blue-collar

4369

37

0.7

 

3489

116

3.3

 

Number of employees

 1–4

4047

22

0.4

0.599

1448

47

3.1

0.943

 5–49

9302

43

0.4

0.216d

3212

98

3.3

0.481d

 50–299

3317

12

0.3

 

1142

34

3.0

 

 ≥ 300

1511

5

0.2

 

548

15

2.5

 

Working hours per a week (hours)

 < 40

10,350

44

0.3

0.042

2951

54

1.8

< 0.001

 41–52

4955

18

0.3

0.021d

1841

70

3.7

< 0.001d

 53–60

2011

11

0.5

 

1076

53

5.3

 

 ≥ 61

861

9

1.0

 

482

17

3.5

 

Tenure (years)

 < 1

2203

5

0.2

0.168

815

12

1.6

0.019

 1–5

6713

36

0.4

0.714d

2133

69

3.2

0.012d

 ≥ 5

9261

41

0.4

 

3402

113

3.4

 

Shift work

 Yes

1643

10

0.5

0.318

908

20

2.2

0.107

 No

16,534

72

0.4

 

5442

174

3.3

 

Type of employment

 Regular

13,841

48

0.3

< 0.001

4347

132

3.2

0.899

 Temporary

4336

34

0.7

 

2003

62

3.0

 

Labor unions

 Presence

2506

8

0.2

0.289

935

19

1.9

0.049

 Absence

15,671

74

0.4

 

5415

175

3.3

 

Job-related factors

Physical risk factors

 Yes

5243

55

0.9

< 0.001

4224

161

3.8

< 0.001

 No

12,934

27

0.2

 

2126

33

1.8

 

Biochemical risk factors

 Yes

3017

42

1.2

< 0.001

3080

128

4.0

< 0.001

 No

15,160

40

0.2

 

3270

66

2.2

 

Ergonomic risk factors

 Yes

14,438

78

0.5

< 0.001

6057

188

3.1

0.305

 No

3739

4

0.1

 

293

6

2.8

 

Usage of personal protective equipment

 No need

15,468

54

0.3

< 0.001

3042

66

1.9

< 0.001

 Need/wear

2440

24

0.9

 

3038

118

4.2

 

 Need/no wear

269

4

1.6

 

270

10

4.5

 

Provision of safety and health information

 Yes

11,227

47

0.4

0.406

4396

119

2.8

0.016

 No

6950

35

0.4

 

1954

75

3.8

 
  1. aUnweighted case numbers of workers
  2. bPercentages based on weighted analysis
  3. cP-value of the weighted chi-squared test results
  4. dP-value for trend in the weighted analysis