Table 2 Risk factors associated malaria infection in the Yunnan border area, China

School education ≤ 6 years

1.72 (1.14–2.60)

1.20 (0.55–2.61)

Family wealth index < 3

2.56 (1.70–3.86)

1.55 (0.70–3.45)

Residence ecology in one month prior to attendance of health facilities

Overnight in Myanmar

35.90 (20.53–62.79)

30.31 (15.42–59.58)

Overnight out of home

129.89 (58.91–286.36

69.71 (8.59–261.47)

Rural lowland and foothill

2.56 (1.69–3.87)

3.05 (1.59–5.84)

Altitude < 500 m

7.59 (4.89–11.77)

4.59 (2.35–8.97)

Water body ≤ 100 m

9.40 (4.61–19.17)

1.22 (0.005–331.49)

Streamlets ≤ 100 m

37.95 (15.94–90.37)

8.08 (2.23–29.25)

Proximity to shrub grass and forest

4.80 (3.14–7.35)

1.53 (0.78–2.99)

Wood and thatched houses or cottages

40.21 (16.86–95.88)

2.20 (0.47–10.40)

No screened windows and doors

8.77 (4.29–17.96)

5.80 (0.31–110.16)

No measures against mosquito bites

1.05 (0.68–1.64)

-

Use of untreated nets

0.9465 (0.63–1.41)

-

Working as day laborers

1.3261 (0.44–31)

-

Building houses, visiting relatives and friends

4.49 (2.47–8.16)

1.79 (0.80–3.98)

Don’t know malaria symptoms

0.62 (0.40–0.97)

0.62 (0.24–1.60)

Don’t know malaria transmission

1.47 (0.95–2.27)

1.69 (0.72–3.97)

No consideration of malaria prevention prior to entering endemic areas

2.63 (1.57–4.39)

10.02 (0.99–101.30)

Non co-decision

5.10 (2.44–10.65)

1.36 (0.02–99.57)

Availability of foreigners nearby home

2.36 (1.51–3.69)

2.98 (0.32–27.74)