Where used:
| Data Set | Diabetes Data Set (Summary Core) | references in description OBSERVATION DATE (SMOKING STATUS) |
| Data Set | Mental Health and Learning Disabilities Data Set | references in description OBSERVATION DATE (SMOKING STATUS) |
| Data Set | National Renal Data Set - Renal Care | references in description OBSERVATION DATE (SMOKING STATUS) |
| Data Set | National Renal Data Set - Transplant | references in description OBSERVATION DATE (SMOKING STATUS) |
| Data Element | OBSERVATION DATE (SMOKING STATUS) | references in description OBSERVATION DATE (SMOKING STATUS) |