Research Article

Serum and Dietary Folate and Vitamin B12 Levels Account for Differences in Cellular Aging: Evidence Based on Telomere Findings in 5581 U.S. Adults

Table 1

Percentiles for the exposure and outcome variables representing U.S. women and men.

VariablePercentile (±SE)
5th25th50th75th95th

Serum folate (ng/mL)
Women ()
Men ()
Combined ()
Serum vitamin B12 (pg/mL)
Women ()
Men ()
Combined ()
Dietary folate (mcg)
Women ()
Men ()
Combined ()
Dietary vitamin B12 (mcg)
Women ()
Men ()
Combined ()
Telomere length (base pairs)
Women ()
Men ()
Combined ()

Note: SE: standard error. Table values include person-level weighted adjustments based on the sampling methods of NHANES so that values represent those of the U.S. adult population.