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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).