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Table 1 Results from a Poisson regression model showing association between the risk of Plasmodium falciparum infections and rainfall anomaly adjusted for other factors

From: Trends of Plasmodium falciparum prevalence in two communities of Muheza district North-eastern Tanzania: correlation between parasite prevalence, malaria interventions and rainfall in the context of re-emergence of malaria after two decades of progressively declining transmission

Variable Risk ratio 95% CI P > z
Rainfall anomaly: positive anomaly 2.793 (2.227–3.504) < 0.001
Year of survey
 1999 1   
 2000 1.208 (1.070–1.365) 0.002
 2001 1.003 (0.858–1.173) 0.970
 2004 0.626 (0.544–0.720) < 0.001
 2008 0.707 (0.595–0.841) < 0.001
 2009 0.549 (0.443–0.681) < 0.001
 2010 0.240 (0.177–0.327) < 0.001
 2011 0.096 (0.068–0.135) < 0.001
 2012 0.099 (0.082–0.121) < 0.001
 2013 0.072 (0.063–0.083) < 0.001
 2014 0.211 (0.167–0.266) < 0.001
 2015 0.233 (0.195–0.278) < 0.001
Bed net ownership: no bed nets 1.350 (1.221–1.493) < 0.001
Village: Mpapayu 0.849 (0.771– 0.936) 0.001