Table 2.

Univariate relationships between serum antioxidants and other factors with log RDW at baseline among participants in the Women’s Health and Aging Study I

Characteristic	Standardized Beta	SE	P
Age (years)	0.036	0.036	0.32
Race, white	-0.394	0.080	<0.0001
Education <12 years	0.106	0.076	0.16
Body mass index (kg/m2)	0.044	0.038	0.25
Current smoker	0.156	0.114	0.17
Mini-Mental State Exam score <24	0.110	0.097	0.26
Log total serum carotenoids (μmol/L)	-0.142	0.036	0.0001
Log serum α-tocopherol (μmol/L)	-0.137	0.036	0.0002
Serum selenium (μg/dL)	-0.143	0.037	0.0001
Ferritin <12 μg/L	0.117	0.023	<0.0001
Vitamin B12 <200 pg/mL	-0.007	0.015	0.66
Folate <5.89 nmol/L	0.107	0.039	0.007
Log serum IL-6 (pg/mL)	0.225	0.035	<0.0001
Log serum protein carbonyls (nmol/mg)	0.053	0.037	0.15
Hypertension	0.102	0.074	0.17
Angina	-0.091	0.086	0.29
Heart failure	0.343	0.116	0.003
Peripheral artery disease	0.059	0.087	0.49
Stroke	0.064	0.161	0.68
Diabetes	-0.085	0.097	0.38
Chronic obstructive pulmonary disease	0.042	0.081	0.60
Depression	-0.006	0.096	0.95
Cancer	0.076	0.113	0.51
Renal insufficiency	-0.029	0.075	0.70