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Table 3 Logistic regression analysis of explanatory factors for serological evidence of exposure to malaria

From: Anti-malarial seroprevalence assessment during an elimination programme in Chabahar District, south-eastern Iran

 

P. falciparum

P. vivax

n/N

Crude OR (95 % CI)

P value

Adjusted OR (95 % CI)

P value

n/N

Crude OR (95 % CI)

P value

Adjusted OR (95 % CI)

P value

Location

 City

78/744

1

0.068

1

0.405

50/744

1

0.001

1

 

 Village

109/735

1.49 (0.97–2.28)

 

1.27 (0.71–2.26)

 

95/735

2.06 (1.36–3.13)

 

2.12 (1.23–3.67)

0.009

Age

 1 to 5

4/333

1

0.009

1

0.020

15/333

1

0.032

1

 

 6 to 15

21/404

4.51 (1.50–13.59)

<0.001

5.00 (1.31–19.16)

<0.001

33/404

1.89 (1.06–3.36)

<0.001

1.72 (0.88–3.39)

0.110

 >15

161/725

23.48 (8.65–63.76)

 

22.17 (6.37–77.08)

 

96/725

3.24 (1.89–5.54)

 

2.55 (1.34–4.82)

0.006

LLIN use

 No

112/804

1

0.143

1

0.585

83/804

1

0.544

1

 

 Yes

73/669

0.76 (0.52–1.10)

 

1.13 (0.71–1.81)

 

62/669

0.89 (0.60–1.32)

 

1.07 (0.60–1.92)

0.820

Reported history of malaria

 No

129/1220

1

<0.001

1

0.156

101/1220

1

<0.001

1

 

 Yes

57/246

2.55 (1.62–4.00)

 

1.49 (0.85–2.60)

 

43/246

2.35 (1.71–3.22)

 

1.58 (1.10–2.28)

0.015

Breeding sitea

 No

68/431

1

0.029

1

0.969

49/431

1

0.196

1

 

 Yes

119/1046

0.69 (0.49–0.96)

 

1.01 (0.49–2.10)

 

95/1046

0.78 (0.53–1.15)

 

1.10 (0.59–2.06)

0.753

Population densityb

 Low

68/455

1

0.054

1

0.263

49/455

1

0.276

1

 

 High

83/763

0.69 (0.48–1.01)

 

0.83 (0.59–1.16)

 

65/763

0.77 (0.48–1.24)

 

0.97 (0.61–1.56)

0.901

Visitor from endemic setting

 No

161/1305

1

0.340

1

0.915

132/1305

1

0.269

1

 

 Yes

26/173

1.26 (0.78–2.03)

 

0.97 (0.50–1.86)

 

13/173

0.72 (0.40–1.30)

 

0.53 (0.24–1.18)

0.114

SES

 Low

80/506

1

0.122

1

0.011

47/506

1

0.969

1

 

 Middle

64/521

0.75 (0.51–1.09)

0.004

0.59 (0.40–0.88)

0.002

48/521

0.99 (0.63–1.57)

0.430

1.00 (0.58–1.74)

0.998

 High

39/412

0.56 (0.38–0.81)

 

0.47 (0.31–0.73)

 

46/412

1.23 (0.73–2.07)

 

1.26 (0.72–2.20)

0.406

  1. Confidence intervals were adjusted to allow for the clustered sampling
  2. OR odds ratio, CI confidence interval, LLIN long-lasting insecticide treated net
  3. aWithin a 100 m radius of household
  4. bHigh: more than ten houses within a 100 m radius of household; low: less than ten houses within a 100 m radius of household
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Malaria Journal

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