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Table 2 Linear regression results showing the change in mean haemoglobin concentration (g/dL) in highland and lowland villages by year and other variables when adjusted for age and gender

From: A progressive declining in the burden of malaria in north-eastern Tanzania

Variable Lowland village Highland village
Coefficient (95%CI) P-value Coefficient (95%CI) P-value
Intercept 9.253 (8.822 - 9.684) <0.001 11.073 (10.652 - 11.494) <0.001
Use of net 0.039 (-0.075 - 0.153) 0.495 0.149 (0.031 - 0.267) 0.013
P. falciparum § -0.388 (-0.506 - -0.27) <0.001 -0.471 (-0.642 - -0.300) <0.001
Survey period# -0.28 (-0.400 - -0.160) <0.001 -0.254 (-0.374 - -0.134) <0.001
Year 2003 Reference      
Year 2004 0.145 (-0.065 - 0.355) 0.175 -0.933 (-1.154 - -0.712) <0.001
Year 2005 0.327 (0.129 - 0.525) 0.001 -1.199 (-1.42 - -0.978) <0.001
Year 2006 0.286 (0.076 - 0.496) 0.008 -1.248 (-1.469 - -1.027) <0.001
Year 2007 0.134 (-0.087 - 0.355) 0.235 -1.048 (-1.269 - -0.827) <0.001
Year 2008 0.424 (0.130 - 0.718) 0.005 -0.515 (-0.821 - -0.209) <0.001
  1. § Blood slide positivity for Plasmodium falciparum at sampling
  2. # Effect of blood sample collected in November versus May