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Table 3 Baseline characteristics of the study population and its association with P. vivax and P. falciparum malaria cases

From: Higher risk of malaria transmission outdoors than indoors by Nyssorhynchus darlingi in riverine communities in the Peruvian Amazon

Characteristics

P. vivax

P. falciparum

No. positive (%)

(n = 42)

No. negative (%)

(n = 808)

P-value

No. positive (%)

(n = 35)

No. negative (%)

(n = 878)

P-value

Study area

  

0.001**

  

0.008**

 Salvador

20 (47.6)

282 (34.9)

 

11 (61.1)

291 (35.0)

 

 Urco Miraño

3 (7.1)

246 (30.4)

 

0 (0.0)

249 (29.9)

 

 Libertad

18 (42.9)

227 (28.1)

 

6 (33.3)

239 (28.7)

 

 Visto Bueno

1 (2.4)

53 (6.6)

 

1 (5.6)

53 (6.4)

 

Sex

  

0.636

  

0.815

 Female

22 (52.4)

388 (48.0)

 

8 (44.4)

402 (48.3)

 

 Male

20 (47.6)

420 (52.0)

 

10 (55.6)

430 (51.7)

 

Age group (years)

  

0.781

  

0.456

 <10

15 (35.7)

259 (32.0)

 

4 (22.2)

270 (32.5)

 

 10–29.9

11 (26.2)

255 (31.6)

 

8 (44.4)

258 (31.0)

 

 ≥30

16 (38.1)

294 (36.4)

 

6 (33.3)

304 (36.5)

 

Education

  

0.343

  

0.682

 None

11 (26.2)

223 (27.6)

 

4 (22.2)

230 (27.6)

 

 Primary school

27 (64.3)

440 (54.5)

 

12 (66.7)

455 (54.7)

 

 Secondary school or higher

4 (9.5)

145 (17.9)

 

2 (11.1)

147 (17.7)

 

Occupation (>18 years-old)

  

0.003**

  

0.254

 Forest related

5 (11.9)

260 (32.2)

 

9 (50.0)

256 (30.7)

 

 Housewife/student

32 (76.2)

409 (50.6)

 

7 (38.9)

434 (52.2)

 

 Others

5 (11.9)

139 (17.2)

 

2 (11.1)

142 (17.1)

 

Dwelling wall materiala

  

1.000

  

0.034**

 Wood

35 (92.1)

630 (92.4)

 

13 (76.5)

652 (92.7)

 

 Pona and other related

3 (7.9)

52 (7.6)

 

4 (23..5)

51 (7.3)

 

Dwelling roof material

  

0.745

  

0.321

 Tin (calamina)

14 (33.3)

293 (36.3)

 

4 (22.2)

303 (36.4)

 

 Palm leaves

28 (66.7)

515 (63.7)

 

14 (77.8)

529 (63.6)

 

Electricity

  

0.103*

  

0.276

 Yes

16 (38.1)

207 (25.6)

 

11 (61.1)

616 (74.0)

 

 No

26 (61.9)

601 (74.4)

 

7 (38.9)

216 (26.0)

 

Impregnated bednets

  

0.381

  

0.336

 Yes

38 (90.5)

680 (84.2)

 

17 (94.4)

701 (84.3)

 

 No

4 (9.5)

128 (15.8)

 

1 (5.6)

131 (15.7)

 
  1. *P < 0.2, **P < 0.05; Fisher’s exact test
  2. aFactor with missing values