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Table 2 Relationships between characteristics of study subjects and PSHI by injury risk level

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

Variables PSHI (Low-risk group) PSHI (High-risk group)
Total Yes p-valuec Total Yes p-valuec
Na Na %b Na Na %b
General characteristics
Age (years)
 15–29 2746 1541 57.6 < 0.001 708 459 67.5 < 0.001
 30–39 4811 3053 63.7 0.168d 1340 973 72.8 0.039d
 40–49 5284 3369 63.9   1808 1280 71.6  
 50–59 3349 2087 62.3   1571 1084 69.8  
 ≥ 60 1987 1177 60.2   923 600 65.6  
Sex
 Male 8640 5757 66.2 < 0.001 3999 2976 74.4 < 0.001
 Female 9537 5470 58.7   2351 1420 62.5  
Education level
 Middle school or below 1887 1064 58.5 < 0.001 1109 708 65.3 < 0.001
 High school 6266 3512 56.7 < 0.001d 3189 2179 69.1 < 0.001d
 College or above 10,024 6651 66.0   2052 1509 74.1  
Monthly income (KRW 10,000)
 < 150 5501 2872 53.8 < 0.001 1934 1148 61.1 < 0.001
 150–249 6198 3816 61.6 < 0.001d 2312 1555 67.8 < 0.001d
 250–399 4773 3261 67.2   1694 1345 78.9  
 ≥ 400 1705 1278 73.4   410 348 84.2  
Occupational characteristics
Occupational type
 White-collar 8943 6050 67.4 < 0.001 1285 1024 79.8 < 0.001
 Pink-collar 4865 2465 51.6   1576 905 59.9  
 Blue-collar 4369 2712 61.9   3489 2467 70.5  
Number of employees
 1–4 4047 1887 48.5 < 0.001 1448 776 56.3 < 0.001
 5–49 9302 5723 61.8 < 0.001d 3212 2181 68.5 < 0.001d
 50–299 3317 2398 71.3   1142 935 80.9  
 ≥ 300 1511 1219 77.9   548 504 91.4  
Working hours per a week (hours)
 < 40 10,350 6479 63.0 < 0.001 2951 2072 71.7 < 0.001
 41–52 4955 3117 63.1 < 0.001d 1841 1326 72.1 < 0.001d
 53–60 2011 1152 58.2   1076 697 66.4  
 ≥ 61 861 479 57.1   482 301 61.9  
Tenure (years)
 < 1 2203 1132 52.2 < 0.001 815 518 67.2 < 0.001
 1–5 6713 3956 59.5 < 0.001d 2133 1379 65.0 < 0.001d
 ≥ 5 9261 6139 66.6   3402 2499 74.1  
Shift work
 Yes 1643 1117 67.0 < 0.001 908 745 80.9 < 0.001
 No 16,534 10,110 61.8   5442 3651 68.3  
Type of employment
 Regular 13,841 8997 64.6 < 0.001 4347 3185 73.3 < 0.001
 Temporary 4336 2230 53.8   2003 1211 62.7  
Labor unions
 Presence 2506 1978 77.4 < 0.001 935 813 86.1 < 0.001
 Absence 15,671 9249 59.8   5415 3583 67.3  
Job-related factors
Physical risk factors
 Yes 5243 3452 65.8 < 0.001 4224 3035 72.3 < 0.001
 No 12,934 7775 60.9   2126 1361 65.8  
Biochemical risk factors
 Yes 3017 2012 65.7 < 0.001 3080 2255 73.2 < 0.001
 No 15,160 9215 61.6   3270 2141 67.1  
Ergonomic risk factors
 Yes 14,438 8794 61.5 < 0.001 6057 4171 69.7 0.004
 No 3739 2433 65.1   293 225 77.1  
Usage of personal protective equipment
 No need 15,468 8866 58.3 < 0.001 3042 1612 54.4 < 0.001
 Need/wear 2440 2179 89.4   3038 2621 86.5  
 Need/no wear 269 182 66.3   270 163 62.1  
  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
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Annals of Occupational and Environmental Medicine

ISSN: 2052-4374

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