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Table 1 Distribution of risk factors for thyroid cancer among non-office, and office) workers

From: Thyroid cancer among female workers in Korea, 2007–2015

 

Total

Non-office

Office

All (%)

Cancer (%)

χ2 testa

All

Cancer

χ2 testa

All

Cancer

χ2 testa

n = 149,258

n = 2614 (1.8)

 

n = 71,176

n = 1177 (1.7)

 

n = 78,082

n = 1437 (1.8)

 

Age(years)

  

p = < 0.001

  

p = < 0.001

  

p = < 0.001

 15–19

990 (0.7)

3 (0.1)

 

622 (0.9)

2 (0.2)

 

368 (0.5)

1 (0.1)

 

 20–24

17,402 (11.7)

121 (4.6)

 

8402 (11.8)

53 (4.5)

 

9000 (11.5)

68 (4.7)

 

 25–29

33,063 (22.2)

413 (15.8)

 

13,758 (19.3)

172 (14.6)

 

19,305 (24.7)

241 (16.8)

 

 30–34

23,160 (15.5)

376 (14.4)

 

8734 (12.3)

131 (11.1)

 

14,426 (18.5)

245 (17.0)

 

 35–39

21,673 (14.5)

448 (17.1)

 

8271 (11.6)

154 (13.1)

 

13,402 (17.2)

294 (20.5)

 

 40–44

18,364 (12.3)

421 (16.1)

 

9670 (13.6)

195 (16.6)

 

8694 (11.1)

226 (15.7)

 

 45–49

16,458 (11.0)

422 (16.1)

 

9979 (14.0)

230 (19.5)

 

6479 (8.3)

192 (13.4)

 

 50–54

10,173 (6.8)

247 (9.4)

 

6561 (9.2)

134 (11.4)

 

3612 (4.6)

113 (7.9)

 

 55–59

5446 (3.6)

114 (4.4)

 

3462 (4.9)

69 (5.9)

 

1984 (2.5)

45 (3.1)

 

 60–64

2529 (1.7)

49 (1.9)

 

1717 (2.4)

37 (3.1)

 

812 (1.0)

12 (0.8)

 

Income decile

  

p = < 0.001

  

p = 0.0157

  

p = < 0.001

 0 (lowest)

0 (0.0)

0 (0.0)

 

0 (0.0)

0 (0.0)

 

0 (0.0)

0 (0.0)

 

 1

26,560 (17.8)

486 (18.6)

 

13,676 (19.2)

228 (19.4)

 

12,884 (16.5)

258 (18.0)

 

 2

22,208 (14.9)

358 (13.7)

 

12,365 (17.4)

206 (17.5)

 

9843 (12.6)

152 (10.6)

 

 3

19,081 (12.8)

289 (11.1)

 

10,877 (15.3)

158 (13.4)

 

8204 (10.5)

131 (9.1)

 

 4

19,096 (12.8)

246 (9.4)

 

9956 (14.0)

144 (12.2)

 

9140 (11.7)

102 (7.1)

 

 5

15,773 (10.6)

256 (9.8)

 

8001 (11.2)

130 (11.0)

 

7772 (10.0)

126 (8.8)

 

 6

13,051 (8.7)

219 (8.4)

 

5841 (8.2)

92 (7.8)

 

7210 (9.2)

127 (8.8)

 

 7

12,740 (8.5)

240 (9.2)

 

4729 (6.6)

95 (8.1)

 

8011 (10.3)

145 (10.1)

 

 8

11,420 (7.7)

248 (9.5)

 

3601 (5.1)

75 (6.4)

 

7819 (10.0)

173 (12.0)

 

 9

9329 (6.3)

272 (10.4)

 

2130 (3.0)

49 (4.2)

 

7199 (9.2)

223 (15.5)

 

 10 (highest)

0 (0.0)

0 (0.0)

 

0 (0.0)

0 (0.0)

 

0 (0.0)

0 (0.0)

 

Smoking

  

p = < 0.001

  

p = 0.0075

  

p = 0.0011

 Never

142,373 (95.4)

2539 (97.1)

 

67,782 (95.2)

1143 (97.1)

 

74,591 (95.5)

1396 (97.1)

 

 Former

2360 (1.6)

32 (1.2)

 

1031 (1.4)

8 (0.7)

 

1329 (1.7)

24 (1.7)

 

 Current

4525 (3.0)

43 (1.6)

 

2363 (3.3)

26 (2.2)

 

2162 (2.8)

17 (1.2)

 

Alcohol(times/week)

  

p = < 0.001

  

p = 0.0072

  

p = < 0.001

 0

120,686 (80.9)

2211 (84.6)

 

58,419 (82.1)

1007 (85.6)

 

62,267 (79.7)

1204 (83.8)

 

 1–2

24,952 (16.7)

366 (14.0)

 

11,005 (15.5)

147 (12.5)

 

13,947 (17.9)

219 (15.2)

 

  ≥ 3

3620 (2.4)

37 (1.4)

 

1752 (2.5)

23 (2.0)

 

1868 (2.4)

14 (1.0)

 

BMI((kg/m2)

  

p = < 0.001

  

p = < 0.001

  

p = < 0.001

  < 18.5

15,365 (10.3)

170 (6.5)

 

6563 (9.2)

61 (5.2)

 

8802 (11.3)

109 (7.6)

 

 18.5–24.9

110,945 (74.3)

1936 (74.1)

 

52,122 (73.2)

858 (72.9)

 

58,823 (75.3)

1078 (75.0)

 

 25.0–29.9

19,933 (13.4)

447 (17.1)

 

10,922 (15.3)

238 (20.2)

 

9011 (11.5)

209 (14.5)

 

  ≥ 30

3015 (2.0)

61 (2.3)

 

1569 (2.2)

20 (1.7)

 

1446 (1.9)

41 (2.9)

 

Physical activity

  

p = < 0.001

  

p = 0.0818

  

p = < 0.001

 never

95,449 (63.9)

1556 (59.5)

 

46,349 (65.1)

738 (62.7)

 

49,100 (62.9)

818 (56.9)

 

 1~ 2 times/week

35,381 (23.7)

678 (25.9)

 

16,246 (22.8)

274 (23.3)

 

19,135 (24.5)

404 (28.1)

 

  ≥ 3 times/week

18,428 (12.3)

380 (14.5)

 

8581 (12.1)

165 (14.0)

 

9847 (12.6)

215 (15.0)

 

Industry sectors

  

p = < 0.001

  

p = 0.6728

  

p = < 0.001

 Agriculture, forestry, fishing, mining and quarrying

492 (0.3)

13 (0.5)

 

297 (0.4)

7 (0.6)

 

195 (0.2)

6 (0.4)

 

 Manufacture of beverages and food products

2401 (1.6)

43 (1.6)

 

1790 (2.5)

36 (3.1)

 

611 (0.8)

7 (0.5)

 

 Manufacture of textiles and apparel

2985 (2.0)

52 (2.0)

 

1836 (2.6)

30 (2.5)

 

1149 (1.5)

22 (1.5)

 

 Printing and printing related industry

1011 (0.7)

12 (0.5)

 

367 (0.5)

4 (0.3)

 

644 (0.8)

8 (0.6)

 

 Manufacture of coke, briquettes, refined petroleum, chemicals and chemical products

1174 (0.8)

22 (0.8)

 

733 (1.0)

10 (0.8)

 

441 (0.6)

12 (0.8)

 

 Manufacture of pharmaceuticals, medicinal chemical and botanical products

144 (0.1)

2 (0.1)

 

97 (0.1)

2 (0.2)

 

47 (0.1)

0 (0.0)

 

 Manufacture of rubber and plastics products

885 (0.6)

12 (0.5)

 

605 (0.9)

7 (0.6)

 

280 (0.4)

5 (0.3)

 

 Manufacture of glass and non-metallic mineral products

332 (0.2)

4 (0.2)

 

193 (0.3)

1 (0.1)

 

139 (0.2)

3 (0.2)

 

 Manufacture of basic metals

1537 (1.0)

22 (0.8)

 

940 (1.3)

16 (1.4)

 

597 (0.8)

6 (0.4)

 

 Manufacture of electronic components, computer; visual, sounding and communication equipment

4605 (3.1)

60 (2.3)

 

3602 (5.1)

50 (4.2)

 

1003 (1.3)

10 (0.7)

 

 Manufacture of medical, precision and optical instruments, watches and clocks

314 (0.2)

3 (0.1)

 

199 (0.3)

0 (0.0)

 

115 (0.1)

3 (0.2)

 

 Manufacture of electrical equipment

883 (0.6)

15 (0.6)

 

549 (0.8)

8 (0.7)

 

334 (0.4)

7 (0.5)

 

 Manufacture of machinery and equipment

8727 (5.8)

133 (5.1)

 

6067 (8.5)

103 (8.8)

 

2660 (3.4)

30 (2.1)

 

 Manufacture of motor vehicles, trailers and semitrailers, and transport equipment

2433 (1.6)

37 (1.4)

 

1820 (2.6)

29 (2.5)

 

613 (0.8)

8 (0.6)

 

 Manufacture of wood, products of wood, cork and furniture

720 (0.5)

16 (0.6)

 

421 (0.6)

7 (0.6)

 

299 (0.4)

9 (0.6)

 

 Other manufacturing

4244 (2.8)

57 (2.2)

 

3101 (4.4)

39 (3.3)

 

1143 (1.5)

18 (1.3)

 

 Electricity, gas, steam, sewage, wastewater treatment services

602 (0.4)

11 (0.4)

 

237 (0.3)

2 (0.2)

 

365 (0.5)

9 (0.6)

 

 Construction

4069 (2.7)

63 (2.4)

 

1207 (1.7)

19 (1.6)

 

2862 (3.7)

44 (3.1)

 

 Wholesale and retail trade

14,168 (9.5)

262 (10.0)

 

6436 (9.0)

122 (10.4)

 

7732 (9.9)

140 (9.7)

 

 Transportation

2720 (1.8)

42 (1.6)

 

1271 (1.8)

21 (1.8)

 

1449 (1.9)

21 (1.5)

 

 Accommodation and food service activities

4038 (2.7)

68 (2.6)

 

2475 (3.5)

44 (3.7)

 

1563 (2.0)

24 (1.7)

 

 Publishing activities, motion picture, broadcasting activities, telecommunications, information service activities

3527 (2.4)

58 (2.2)

 

1090 (1.5)

19 (1.6)

 

2437 (3.1)

39 (2.7)

 

 Financial and insurance activities

7260 (4.9)

186 (7.1)

 

1450 (2.0)

33 (2.8)

 

5810 (7.4)

153 (10.6)

 

 Real estate activities and rental and leasing activities

5168 (3.5)

91 (3.5)

 

2558 (3.6)

47 (4.0)

 

2610 (3.3)

44 (3.1)

 

 Professional, scientific and technical activities

5022 (3.4)

70 (2.7)

 

1383 (1.9)

20 (1.7)

 

3639 (4.7)

50 (3.5)

 

 Business facilities management and business support services

7722 (5.2)

111 (4.2)

 

4686 (6.6)

66 (5.6)

 

3036 (3.9)

45 (3.1)

 

 Public administration and defense; compulsory social security

21,400 (14.3)

476 (18.2)

 

2805 (3.9)

59 (5.0)

 

18,595 (23.8)

417 (29.0)

 

 Education

15,447 (10.3)

273 (10.4)

 

7329 (10.3)

126 (10.7)

 

8118 (10.4)

147 (10.2)

 

 Human health and social work activities

16,158 (10.8)

251 (9.6)

 

10,948 (15.4)

174 (14.8)

 

5210 (6.7)

77 (5.4)

 

 Arts, sports and recreation related services

1962 (1.3)

31 (1.2)

 

1066 (1.5)

17 (1.4)

 

896 (1.1)

14 (1.0)

 

 Membership organizations, repair and other personal services

6357 (4.3)

107 (4.1)

 

3238 (4.5)

53 (4.5)

 

3119 (4.0)

54 (3.8)

 

 Activities of households as employers

575 (0.4)

8 (0.3)

 

335 (0.5)

5 (0.4)

 

240 (0.3)

3 (0.2)

 

 Activities of extraterritorial organizations and bodies

176 (0.1)

3 (0.1)

 

45 (0.1)

1 (0.1)

 

131 (0.2)

2 (0.1)

 
  1. aχ2 test comparing the distribution in all sample and thyroid cancer cases