| AUC | Area under the curve |
| BIC | Bayesian Information Criterion |
| CDC | Centers for Disease Control and Prevention |
| cv | Cross-validation |
| HANDLS | Healthy Aging in Neighborhood of Diversity Across the Life Span |
| Hcy | Homocysteine |
| LASSO | least absolute shrinkage and selection operator |
| LOWESS | Locally weighted regression |
| MCH | Mean cell hemoglobin |
| MEC | mobile examination center |
| MMA | methylmalonic acid |
| MRV | Medical Research Vehicles |
| MTHF | N-5-methyl-tetrahydrofolate |
| NCHS | National Center for Health Statistics |
| NHANES | National Health and Nutrition Examination Surveys |
| RDW | Red cell distribution width |
| ROC | Receiver Operating Characteristic |
| SAH | S-adenosylhomocysteine |
| SAM | S-adenosylemethionine |
| SUA | Serum Uric Acid |