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Table 1 General characteristics of the study subjects

From: Second hand smoke exposure in workplace by job status and occupations

Variables n Exposure to SHS in Workplace (Number (%)) p-value
Over 1/4 workhours Almost never Never
Gender
 Male 28,732 (57.8%) 4587 (16.0) 9163 (31.9) 14,982 (52.1) p < 0.01
 Female 20,942 (42.2%) 1441 (6.9) 5939 (28.4) 13,562 (64.8)
Age(yrs)
  ≤ 39 18,351 (36.9%) 1661 (9.1) 5341 (29.1) 11,349 (61.8) p < 0.01
 40–49 12,958 (26.1%) 1777 (13.7) 3929 (30.3) 7252 (56.0)
 50–59 11,348 (22.8%) 1698 (15.0) 3608 (31.8) 6042 (53.2)
  ≥ 60 7017 (14.1%) 892 (12.7) 2224 (31.7) 3901 (55.6)
Job status
 Self-employed without workers 8058 (16.2%) 915 (11.4) 2449 (30.4) 4694 (58.3) p < 0.01
 Self-employed with workers 3012 (6.1%) 522 (17.3) 913 (30.3) 1577 (52.4)
 Wage workers (employees) 36,156 (72.8%) 4344 (12.0) 10,956 (30.3) 20,856 (57.7)
 Unpaid family worker 2417 (4.9%) 244 (10.1) 767 (31.7) 1406 (58.2)
 Other workers 27 (0.1%) 3 (11.1) 14 (51.9) 10 (37.0)
Type of wage workers
 Permanent workers 27,279 (76.0%) 2900 (10.6) 8459 (31.0) 15,920 (58.4) p < 0.01
 Temporary workers 6083 (16.9%) 722 (11.9) 1709 (28.1) 3652 (60.0)
 Daily workers 2551 (7.1%) 675 (26.5) 716 (28.1) 1160 (45.5)
Wage_provider
 Work place 33,503 (94.7%) 3796 (11.3) 10,178 (30.4) 19,529 (58.3) p < 0.01
 A dispatcher 673 (1.9%) 104 (15.5) 202 (30.0) 367 (54.5)
 Service provider 1213 (3.4%) 345 (28.4) 340 (28.0) 528 (43.5)
Company size (Number of workers in workplace)
  ≤ 49 38,891 (79.7%) 4976 (12.8) 11,531 (29.6) 22,384 (57.6) p < 0.01
 50–299 6874 (14.1%) 670 (9.7) 2290 (33.3) 3914 (56.9)
  ≥ 300 3011 (6.2%) 254 (8.4) 995 (33.0) 1762 (58.5)
Type of workplace
 Employer’s place of business 37,873 (76.7%) 3949 (10.4) 11,486 (30.3) 22,438 (59.2) p < 0.01
 Customer’s place of business 4107 (8.3%) 694 (16.9) 1193 (29.0) 2220 (54.1)
 In the case of transportation such as cars 1388 (2.8%) 258 (18.6) 507 (36.5) 623 (44.9)
 Outdoor (construction site, field / etc.) 5304 (10.7%) 1039 (19.6) 1661 (31.3) 2604 (49.1)
 My house 533 (1.1%) 31 (5.8) 117 (22.0) 385 (72.2)
 Others 199 (0.4%) 16 (8.0) 52 (26.1) 131 (65.8)
Job Category
 Manager 1354 (2.7%) 176 (13.0) 421 (31.1) 757 (55.9) p < 0.01
 Specialist 3759 (7.6%) 149 (4.0) 930 (24.7) 2680 (71.3)
 Technician and Associate Expert 2505 (5.0%) 279 (11.1) 797 (31.8) 1429 (57.0)
 Office worker 10,545 (21.2%) 746 (7.1) 3061 (29.0) 6738 (63.9)
 Service worker 7666 (15.4%) 874 (11.4) 2140 (27.9) 4652 (60.7)
 Salesperson 7532 (15.2%) 695 (9.2) 2115 (28.1) 4722 (62.7)
 Experts in agriculture and forestry fishing 2951 (5.9%) 213 (7.2) 1014 (34.4) 1724 (58.4)
 Functional Person and Related Person 4492 (9.0%) 1101 (24.5) 1572 (35.0) 1819 (40.5)
 Machine Operator and Assembly Worker 3349 (6.7%) 733 (21.9) 1281 (38.3) 1335 (39.9)
 Laborer 5416 (10.9%) 1049 (19.4) 1719 (31.7) 2648 (48.9)
 Soldier 83 (0.2%) 4 (4.8) 46 (55.4) 33 (39.8)
Occasionally need to wear personal protective equipment
 Yes 12,071 (24.4%) 2709 (22.4) 4116 (34.1) 5246 (43.5) p < 0.01
 No 37,353 (75.6%) 3291 (8.8) 10,899 (29.2) 23,163 (62.0)
Night working days in a month
  ≤ 9 2896 (46.0%) 518(17.9) 874 (30.2) 1504 (51.9) p < 0.01
 10–19 2137 (34.0%) 392 (18.3) 763 (35.7) 982 (46.0)
  ≥ 20 1256 (20.0%) 361 (28.7) 343 (27.3) 552 (43.9)