Figure 2From: Geometric least squares means ratios for the analysis of Plasmodium falciparum in vitro susceptibility to antimalarial drugsGeometric Least Squares Means Ratios of the IC50s to quinine (QN), chloroquine (CQ), monodesethylamodiaquine (MdAQ), and artemisinin (ART). The legend indicates the reference year for the ratio. The x-axis indicates the year tested in the ratio. A logarithmic scale was applied for QN.Back to article page