TABLE 4.
ORs (95% CIs) of suboptimal self-reported dietary intakes and abnormal biomarkers of folate status in US adults, 2011–20121
| Intakes less than the EAR | Intakes above the UL | |
| RBC folate <305 nmol/L | 2.8 (0.28, 28.0) | — |
| P | 0.38 | — |
| Serum folate >45 nmol/L | — | 17.6 (5.5, 56.0) |
| P | — | 1.2 × 10−5 |
1
n = 4878. All estimates are for fully adjusted models including age, sex, race/ethnicity, physical activity, estimated glomerular filtration rate, duration of fasting before blood draw, serum cotinine concentrations, alcohol consumption, poverty-income ratio, and BMI. EAR, Estimated Average Requirement; RBC, red blood cell; UL, Tolerable Upper Intake Level.