Table 3. Multiple correlation analyses of [EPO] with [hemoglobin+PfHRP-2 + hemopexin + total heme].

	Estimate	Std. Error	t-value	Pr (>|t|)
(Intercept)	456.3511	126.2689	3.614	0.0005
Hemoglobin	-25.6799	11.6281	-2.208	0.0292
PfHRP-2	0.8461	0.7130	1.187	0.2378
Hemopexin	-0.3550	0.1464	-2.425	0.0169
Total heme	0.0103	0.3874	0.027	0.9788

The estimated coefficient (Estimate) corresponds to the fitted variable value, the standard error (Std. Error) indicates the variability of the estimated coefficient, the t-value (t-value) measures if the estimated coefficient for this variable is meaningful for the model, and the variable p-value (Pr (>|t|)) indicates the probability that the variable is not relevant in the model. R = 0.50; CI (0.359–0.618); p-value = 0.0001.