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Table 1 Demographic characteristics of study subjects

From: Alterations in the intestinal microbiome and mental health status of workers in an underground tunnel environment

Variable

Case

Percentage

Gender

 male

48

100%

 female

0

0%

Age (years)

 ≤ 20

7

14.6%

 21–30

31

64.6%

 31–40

9

18.8%

 > 40

1

2.1%

Education

 Junior high school or under

5

10.4%

 Senior high school/technical secondary school

20

41.7%

 Junior college or above

23

47.9%

Marital status

 Single/divorced/widowed/separated

36

75.0%

 Married

12

25.0%

Reproductive history

 parous

10

20.8%

 nonparous

38

79.2%

Smoke

 yes

25

52.1%

 no

18

37.5%

 quit smoking(> 1 year)

5

10.4%