Table 4 Multiple logistic regression analysis of variables associated with S. japonica among the respondents

Age group (years)

 < 30

38.10 (8/21)

1

 30–39

27.78 (15/54)

0.318 (0.075–1.354)

0.1212

 40–49

15.35 (35/228)

0.163 (0.041–0.644)

0.0096*

 50–59

10.33 (19/203)

0.058 (0.014–0.239)

< 0.0001*

 ≥ 60

5.26 (6/114)

0.012 (0.002–0.065)

< 0.0001*

Years of doing current job

 < 10

7.61 (7/92)

1

 10–29

12.86 (49/381)

4.162 (1.461–11.856)

0.0076*

 ≥ 30

21.09 (27/128)

18.684 (5.430–64.295)

< 0.0001*

Treatment times

 0

32.00 (8/25)

1

 1–5

17.13 (37/216)

0.265 (0.064–1.095)

0.0666

 6–9

12.26 (26/212)

0.156 (0.035–0.689)

0.0142*

 ≥ 10

8.11 (12/148)

0.100 (0.021–0.476)

0.0038*

Treatment in 2015–2017

 No

18.18 (40/220)

1

 Yes

11.29 (43/381)

0.479 (0.246–0.930)

0.0298*