Table 3.

Biomarkers of nutritional status serum in NHANES III adults ages 60 years and older by frailty; weighted means and SE ^†

	Frail		Pre-frail		Not frail		p-value
Albumin, g/dL							0.002
(3.4-5.4 g/dL) ††	3.98	0.0	4.02	0.0	4.06	0.0
Folate, ng/mL							0.84
(2.7-17.0 ng/mL)††	9.3	0.6	9.1	0.3	8.9	0.3
Selenium, ng/mL							0.004
(70-150 ng/mL)††	122.6	1.0	124.2	0.8	125.8	0.8
Total Carotenoids,* ug/dL							0.01
(48-200 ug/dL)††	75.1	1.8	78.8	1.1	82.5	1.5
Vitamin A, ug/dL							0.43
(32.5-78.0 ug/dL)††	63.7	1.1	63.7	0.7	63.6	0.6
Vitamin B12, pg/mL							0.57
(200-900 pg/mL)††	471.1	19.2	487.5	11.7	503.9	20.9
Vitamin C, mg/dL							0.07
(0.2-2.0 mg/dL)††	0.77	0.0	0.81	0.0	0.85	0.0
Vitamin E, ug/dL							0.07
(550-1700 ug/dL)††	1352.1	31.1	1383.2	19.6	1414.2	24.9

^†Adjusted for age, gender, race-ethnicity, smoking, education, income, BMI, and co-morbidity

^††Normal reference range

^*Sum of beta carotene, beta cryptoxanthin, lutein/zeaxanthin, and lycopene