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Table 2 Differences in the historical and recent estimates of sporozoite prevalence (S), biting rate (B) and entomological inoculation rate (EIR) for the Anopheles gambiae complex, Anopheles funestu s and overall

From: Impact of promoting longer-lasting insecticide treatment of bed nets upon malaria transmission in a rural Tanzanian setting with pre-existing high coverage of untreated nets

Year ORaor RRb[95% CI] p value
Sporozoite prevalence (S) a  
   A. gambiae complex  
   1990-1994c 1.00 NA
   2001-2003d 0.450 [0.392, 0.518] <0.0001
   2008 0.128 [0.075, 0.218] <0.0001
   A. funestus  
   1990-1994c 1.00 NA
   2001-2003d 0.716 [0.609, 0.842] <0.0001
   2008 0.735 [0.377, 1.432] 0.366
   Overall  
   1990-1994c 1.00 NA
   2001-2003d 0.530 [0.477, 0.589] <0.0001
   2008 0.185 [0.122, 0.281] <0.0001
Bites per person per night (B) b  
   A. gambiae complex  
   1990-1994c 1.00 NA
   2001-2003d 0.486 [0.241, 0.983] 0.044
   2008 0.405 [0.200, 0.821] 0.012
   A. funestus  
   1990-1994c 1.00 NA
   2001-2003d 0.396 [0.233, 0.673] 0.0006
   2008 0.072 [0.024, 0.214] <0.0001
   Overall  
   1990-1994c 1.00 NA
   2001-2003d 0.474 [0.250, 0.899] 0.022
   2008 0.359 [0.188, 0.686] 0.0019
Entomological inoculation rate (EIR) b  
   A. gambiae complex  
   1990-1994c 1.00 NA
   2001-2003d 0.214 [0.075, 0.612] 0.004
   2008 0.061 [0.021, 0.176] <0.0001
   A. funestus   
   1990-1994c 1.00 NA
   2001-2003d 0.241 [0.052, 1.100] 0.066
   2008 0.039 [0.008, 0.188] <0.0001
   Overall   
   1990-1994c 1.00 NA
   2001-2003d 0.218 [0.089, 0.531] 0.0008
   2008 0.057 [0.023, 0.141] <0.0001
  1. Village-level data were compared with a generalise linear model (GLM) using a binomial distribution with identity logit link for S and a negative binomial distribution with log link for B and EIR.
  2. aOdds Ratio,
  3. bRelative Rate,
  4. c[2934], d [22]