Table 3

Meteorological variables, their transformation powers and functional forms used in deriving estimates for the association with clinical malaria risk

Variables (degree)
Variables (power)
Transformation functions

Average temperature (Second degree)
Tmean_1 (-2)
Math

Tmean_2 (0.5)
Math
Rainfall (Second degree)
Pmm_1 (2)
Math

Pmm_2 (2)
Math
Relative humidity (Second degree)
RH_1 (-1)
Math

RH_2 (-1)
Math
Rainfall and humidity (first degree)
PmmRH (-1)
Math
Temperature and humidity (first degree)
TRH (1)
TRH - 1305
Temperature and rainfall (first degree)
TPmm (1)
TPmm - 989.7

et al. BMC Public Health 2007 7:101   doi:10.1186/1471-2458-7-101