Figure 4From: Assessment of molecular markers for anti-malarial drug resistance after the introduction and scale-up of malaria control interventions in western Kenya Comparison of prevalence SP drug resistance genotypes in Asembo area between 2001 and 2007 surveys. Dhfr, dhps and combined dhfr/dhps genotypes by study year. Statistical analysis performed using Chi-square tests. *p <0.05 difference in prevalence of mutations between 2001 and 2007.Back to article page