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Table 4 Univariate associations for W. bancrofti infection in 2010, with 95% confidence intervals (CI).

From: The impact of mass drug administration and long-lasting insecticidal net distribution on Wuchereria bancrofti infection in humans and mosquitoes: an observational study in northern Uganda

 

N individuals

n (%) infected

OR

95% CI

Wald p

Sex (female)

701

23 (3.3)

0.78

0.44-1.39

0.403

Age category1:

     

   < 10

754

2 (0.3)

1.00

-

-

   10-19

241

14 (5.8)

23.3

5.10-106.0

< 0.001

   20-29

108

12 (11.1)

47.1

9.73-228.3

< 0.001

   30-39

98

10 (10.2)

42.8

8.70-210.9

< 0.001

   40-49

49

7 (14.3)

62.8

11.6-340.9

< 0.001

   ≥ 50

52

3 (5.8)

23.1

3.7-145.5

< 0.001

Socio-economic status2:

     

   Poorest

261

11 (4.2)

1.00

-

-

   2nd

246

10 (4.1)

0.96

0.40-2.31

0.933

   3rd

257

8 (3.1)

0.73

0.29-1.85

0.505

   4th

271

5 (1.9)

0.43

0.15-1.25

0.110

   Least poor

261

14 (5.4)

1.29

0.57-2.90

0.539

Village:

     

   Adyangoto B

174

12 (6.9)

1.46

0.64-3.34

0.364

   Akabi

142

9 (6.3)

1.34

0.55-3.26

0.522

   Okwor

150

4 (2.7)

0.54

0.17-1.71

0.289

   Aridi

181

6 (3.3)

0.68

0.25-1.84

0.442

   Alwar

226

1 (0.4)

0.09

0.01-0.69

0.004

   Acapii

182

4 (2.2)

0.44

0.14-1.40

0.156

   Adyangoto A3

249

12 (4.8)

1.00

-

-

Household size4:

1304

48 (3.7)

0.99

0.88-1.10

0.792

Main material of walls:

     

   Mud/dung

802

30 (3.7)

1.00

-

-

   Brick

499

18 (3.6)

0.96

0.53-1.75

0.901

Main material of roof:

     

   Grass thatch

1007

36 (3.6)

1.00

-

-

   Iron sheet

297

12 (4.0)

1.14

0.58-2.21

0.708

Toilet facilities:

     

   None

200

11 (5.5)

1.00

-

-

   Pit latrine

1090

36 (3.3)

0.59

0.29-1.17

0.128

Education of head of household:

     

   None

131

5 (3.8)

1.00

-

-

   Primary

982

40 (4.1)

1.07

0.41-2.76

0.889

   Secondary or higher

190

2 (1.1)

0.27

0.05-1.42

0.096

Number nets in household (linear)

1304

48 (3.7)

1.05

0.79-1.40

0.748

Sleeping under net on previous night:

     

   Not sleeping under net

390

15 (3.9)

1.00

-

-

   Sleeping under non-LLIN

204

12 (5.9)

1.56

0.72-3.41

0.258

   Sleeping under LLIN

710

21 (3.0)

0.76

0.39-1.50

0.428

Universal net coverage in household5

350

8 (2.3)

0.53

0.25-1.15

0.110

Proportion of nets in household being LLINs

1304

48 (3.7)

0.99

0.98-1.00

0.008

Proportion of nets in household found hanging/tied over bed/mat

1304

48 (3.7)

0.99

0.98-1.00

0.105

  1. 1 Initial categories of < 5 and 5-9 were found to be statistically similar, therefore combined into a single reference category;
  2. 2 Socio-economic status estimated using principal component analysis based on ownership of key household assets [34];
  3. 3 Adyangoto A village had largest denominator, therefore selected as reference category;
  4. 4 Linear data is better fit for associations with infection than household size divided into quartiles;
  5. 5 Universal coverage defined as households with at least one net for every two people in the household.
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