Table 5.

Association of salivary testosterone with demographic and medical history variables in females.

Model	R2	Predictors	Beta	Sig	r2
Mixed effect model (selected variables)	0.18	Intercept	57.37
		Transferrina	14.24	<0.001	0.15
		Age since DOB	−4.86	0.28	0.01
Full mixed effect model	0.41	Intercept	70.37
		Transferrina	15.71	<0.001	0.16
		Age since DOB	−5.73	0.20	0.01
		NICU stay >24 h	−6.41	0.27	0.02
		Birth weight	−0.01	0.08	0.07
		Gestational age birth	0.06	0.72	<0.01
		Mat Ethnicity		0.24
		White	−5.03		0.01
		Black	3.01		<0.01
		Pat ethnicity		0.16
		White	14.02		0.11
		Black	8.37		0.03
		Mat education	0.43	0.58	<0.01
		Pat education	0.24	0.73	<0.01
		Mat age	0.16	0.74	<0.01
		Pat age	−0.21	0.62	<0.01
		Mat psych history	0.18	0.96	<0.01
		Pat psych history	−2.67	0.64	<0.01
		Income		0.004
		High	−2.59		<0.01
		Middle	2.87		<0.01
		Missing	−28.57		0.05
		5-Min APGAR	−0.97	0.66	<0.01
		Gestation number	−6.03	0.23	0.03
		C-section	−0.26	0.94	<0.01
		Mat smoking	1.53	0.79	<0.01
Reduced mixed effect model in infants with transferrin <0.5 ng/dl	0.01	Intercept	17.89
		Age since DOB	3.48	0.22	0.01

^aLog(10)transferrin.