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Table 4 Multivariate morbidity endpoints in 2004 versus 2005 by district and age group targeted by the campaign in 5331 children aged less than 5 years.1

From: Impact of mass distribution of free long-lasting insecticidal nets on childhood malaria morbidity: The Togo National Integrated Child Health Campaign

 

Age

Southern Coastal plain

(Yoto)

Central Plateaux

(Ogou)

Northern Savannah

(Tone)

mo

2004

%

2005

%

RR (95%CI)

2004

%

2005

%

RR (95%CI)

2004

%

2005

%

RR (95%CI)

Hb <8 g/dL

<18

23.9

24.3

1.01 (0.73-1.41)

35.0

16.2

0.46 (0.33-0.64)

38.8

31.7

0.82 (0.65-1.02)

 

≥18

15.2

9.4

0.62 (0.44-0.88)

17.4

9.4

0.54 (0.37-0.79)

14.5

15.7

1.08 (0.78-1.49)

Malarial anaemia

<18

15.0

19.8

1.31 (0.86-2.01)

23.2

8.6

0.37 (0.24-0.58)

28.6

28.9

1.01 (0.75-1.37)

 

≥18

10.8

7.7

0.71 (0.48-1.05)

13.6

7.4

0.54 (0.33-0.90)

9.7

12.8

1.32 (0.89-1.95)

Clinical malaria

<18

5.9

3.4

0.59 (0.27-1.27)

10.0

3.9

0.38 (0.19-0.76)

11.4

10.4

0.91 (0.62-1.34)

 

≥18

9.5

4.9

0.51 (0.35-0.75)

8.9

7.3

0.83 (0.54-1.28)

10.7

9.4

0.89 (0.59-1.33)

Any parasitaemia

<18

39.6

50.4

1.27 (1.02-1.59)

49.1

44.1

0.90 (0.75-1.07)

39.4

49.0

1.24 (1.05-1.47)

 

≥18

64.1

71.3

1.11 (1.00-1.24)

71.1

68.1

0.96 (0.83-1.11)

70.7

74.5

1.05 (0.94-1.19)

High parasitaemia

<18

32.2

24.8

0.77 (0.48-1.24)

45.5

22.2

0.49 (0.33-0.71)

43.2

40.1

0.93 (0.67-1.28)

 

≥18

30.4

26.4

0.87 (0.68-1.11)

36.0

28.0

0.78 (0.58-1.05)

31.5

36.2

1.15 (0.90-1.47)

  1. RR = relative risk; CI = Confidence Interval; Hb = haemoglobin; mo = month; Clinical malaria = documented axillary temperature ≥37.5°C in the presence of malaria parasitaemia based on the slide result.; Malarial anaemia = Any parasitaemia + Hb < 8 g/dL; High parasitaemia = Parsitaemia >4999/μL.
  2. 1 The prevalence and RR were estimated using a binomial regression analysis with a log-link function, taking into account clustering at village level and adjusting for the age (in categories 0-2,3-5,6-11,12-17,18-23,24-35,36-47,48-59) and sex of the child, the socio-economic status of the household (in quintiles), and the education level of the caretaker (no, primary, ≥secondary school).