Table 1.

Prevalence of pfcrt and pfmdr1 polymorphisms in relation to in vitro CQ susceptibility

Polymorphism	CQ susceptible# isolates (proportion)	CQ resistant# isolates (proportion)	P value
Pfcrt K76	11/17 (0.65)	2/19 (0.11)	< 0.05
Pfcrt T76	6/17 (0.35)	17/19 (0.89)
Pfmdr1 N86	13/17 (0.76)	12/19 (0.63)	0.6
Pfmdr1 Y86	4/17 (0.24)	7/19 (0.37)

Note: In vitro CQ susceptibility is defined as IC₅₀ values less or equal to 100 nM

^aAverage 51, range 11–102 nM, CI 37–64

^bAverage 474; range 120–2,153 nM, CI 273–577