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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