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Table 1 Multivariate mixed-effect regression model of anti-schizont IgG by treatment group.

From: Immunological consequences of intermittent preventive treatment against malaria in Senegalese preschool children

Variables Period Estimates P-value 95% Confidence interval
Treatment group 2002 0.112 0.379 -0.137 0.360
Gender - -0.031 0.787 -0.255 0.193
Age class      
3 years (y) 2003 0.410 0.036 0.027 0.793
4 y 2003 0.733 < 0.0001 0.375 1.091
5 y 2003 0.919 < 0.0001 0.530 1.308
6 y 2003 1.035 < 0.0001 0.631 1.439
Stunting November 2002 0.043 0.814 -0.315 0.401
  July 2003 -0.253 0.144 -0.592 0.086
Wasting November 2002 0.017 0.933 -0.393 0.428
  July 2003 -0.011 0.963 -0.492 0.469
Malaria morbidity 2002 0.243 0.034 0.018 0.468
Parasitaemia December 2002 0.573 < 0.0001 0.308 0.839
  July 2003 0.931 < 0.0001 0.653 1.210
Haemoglobin July 2003 0.003 0.936 -0.082 0.089
Constant term - -1.330 0.005 -2.257 -0.404
Random-effects parameters     
Village - 0.244 - 0.114 0.520
Residual - 0.884 - 0.807 0.969
  1. Gender, age, nutritionnal status and malaria indicators were evaluated as potentially confounding factors, village as a random factor. P values were considered as significant when < 0.05.