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Table 3 Analysis of the correlation between work duration and infectious status

From: A study on the epidemiological characteristics and infectious forecast model of malaria at Guangzhou Airport among Chinese returnees from Africa

Working duration (months)

Number

Malaria positive (incidence rate %)

\(\chi^{ 2}\)

P

1–3

270

8 (2.96)

25.380

0.001

4–6

366

27 (7.38)

  

7–9

183

13 (7.10)

  

10–12

353

42 (11.90)

  

13–15

99

13 (13.13)

  

16–18

71

10 (14.08)

  

19–21

21

3 (14.29)

  

22–24

77

12 (15.58)

  

Above 24

52

6 (11.54)