Table 2.

Relationships between white blood cell (WBC) counts and parasite densities.

	Thailand		Peru
Pathogen	1998	1999	1998	1999
Plasmodium falciparum	0.009; 0.104	0.018; 0.170a	−0.006; 0.051	0.056; 0.357a
Plasmodium vivax	0.010; 0.139a	0.004; 0.113	0.067; 0.343b	0.089; 0.462b
Combined	0.0004; 0.039	0.0056; 0.071	0.0330; 0.201c	0.0787; 0.415b

NOTE. Data are (at left) the slopes of the least-squares best fit linear regression lines for the relationships between log WBC counts and log parasite densities and (at right) Spearman’s rank correlation coefficients.

^aP < .01.

^bP < .00001.

^cP < .001.