Table 2.

Clinical variables as predictors of the log of hair cortisol content

Predictor variable	Beta	Std. Error	P value
Chronic Transfusion (yes/no)	1.42	.044	0.002
Ferritin	-0.0002	0.00008	0.006
Severity score	-0.0007	0.002	0.70
Hemoglobin	0.019	0.02	0.36
White blood cell count	0.026	0.041	0.53
Mean corpuscular volume	-0.0004	0.009	0.97
Lymphocytes	-0.018	0.014	0.19
Monocytes	-0.07	0.039	0.076
Platelets	-0.001	0.0009	0.27
Reticulocyte percent	-0.005	0.018	0.79
Blood urea nitrogen	0.017	0.016	0.29
Creatinine	0.008	0.13	0.95
Bilirubin	0.03	0.08	0.72
Aspartate aminotransferase	-0.007	0.007	0.34
Alkaline phosphatase	-0.0007	0.002	0.73
Albumin	0.47	0.41	0.25
Fetal hemoglobin	-0.01	0.02	0.47

Linear regression models were used. Model: log of hair cortisol content = Predictor + age + sex.