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. 2022 Aug 8;22:1508. doi: 10.1186/s12889-022-13935-x

Table 2.

Comparison of exposure to different occupational hazardous factors

Variable Control group Case group χ2 P
Shift work, n (%) 10.129 0.006*
 Never 97(15.1) 61(9.5)
 Ever 132(20.6) 154(24.0)
 Current 412(64.3) 426(66.5)
Heat exposure, n (%) 11.252 0.001*
 No 355(55.4) 277(43.2)
 Yes 286(44.6) 364(56.8)
Dust exposure, n (%) 13.873  < 0.001*
 No 457(71.3) 394(61.5)
 Yes 184(28.7) 247(38.5)
Noise exposure, n (%) 0.383 0.536
 No 288(44.9) 277(43.2)
 Yes 353(55.1) 364(56.8)

*indicates statistical significance