Where used:
| Data Set | National Renal Data Set - Renal Care | references in description OBSERVATION DATE (ESTIMATED GLOMERULAR FILTRATION RATE) |
| Data Set | National Renal Data Set - Transplant | references in description OBSERVATION DATE (ESTIMATED GLOMERULAR FILTRATION RATE) |
| Data Element | OBSERVATION DATE (ESTIMATED GLOMERULAR FILTRATION RATE) | references in description OBSERVATION DATE (ESTIMATED GLOMERULAR FILTRATION RATE) |