Erythrocyte-binding assays reveal higher binding of Plasmodium knowlesi Duffy binding protein to human Fya+/b+ erythrocytes than to Fya+/b- erythrocytes

Table 1 Erythrocyte-binding assays of PkDBPαII using Fy^a+/b- and Fy^a+/b+ erythrocytes

Erythrocyte	Number of rosettes^a	t-statistic	P-value	Cohen’s d^b
Fy^a+/b- (n = 4) Fy^a+/b+ (n = 4)	94.75 (± 23.16) 155.50 (± 34.32)	-2.935	0.026	2.075

^aNumber of rosettes [mean (± standard deviation)] seen in 30 fields at 200 × magnification
^bCohen’s d suggests that d ≤ 0.2 is considered a small effect size, 0.5 medium effect size and ≥ 0.8 large effect size

ISSN: 1756-3305