Table 2.

Predictors of pituitary iron

Parameter	Linear regression		Logistic regression (R2 z > 5)
	r2	P value	AUROC	Threshold	P value
Years of transfusion	0.36	.0002	0.82	8 y	.012
Ferritin	0.58	<.0001	0.91	4800 ng/mL	.0029
LIC	0.44	<.0001	0.92	25.3 mg/g	.011
R2∗ pancreas	0.62	<.0001	0.85	54 Hz	.07
1/T2∗ heart	0.61	<.0001	0.79	20 ms	.055
Hemoglobin S	0.11	.08	0.71	28%	.098
Reticulocyte count	0.05	.26	0.53	7%	.59