# CDC Mapping Injury, Overdose, and Violence

CDC's county drug overdose death rates per 100,000 residents from the Mapping Injury, Overdose, and Violence county file, built from NCHS National Vital Statistics System death records by county of residence.

## Source

| Fact | Value |
| --- | --- |
| Publisher | Centers for Disease Control and Prevention (CDC), National Center for Injury Prevention and Control, from NCHS National Vital Statistics System death records |
| Product | Mapping Injury, Overdose, and Violence: county drug overdose death rates |
| Source | [https://www.cdc.gov/injury-violence-data/data-vis/index.html](https://www.cdc.gov/injury-violence-data/data-vis/index.html) |
| Category | Health |
| Period | Calendar years as published; metros read the latest |
| Refresh cadence | Monthly |
| Geographies | County, for every calendar year the file publishes; metros read the latest. A metro rate is Cadastre's population-weighted average of CDC's county rates (the pooled deaths per 100,000). |
| Availability | Available |
| Cadastre key | `cdc-overdose` |

## Licence and attribution

| Fact | Value |
| --- | --- |
| Licence | Public domain (U.S. government work), on CDC's terms: credit "Source: CDC", state that the data is available at no charge at data.cdc.gov, no endorsement implied, no CDC or HHS logos |
| Terms | [https://www.cdc.gov/other/agencymaterials.html](https://www.cdc.gov/other/agencymaterials.html) |
| Register status | Production approved; licence open |
| Allowed uses | `evaluation`, `internal`, `derived_analytics`, `public_display`, `redistribution`, `bulk_export`, `api` |

Wherever its figures are shown, this source requires the credit **Source: CDC** ([https://data.cdc.gov/d/psx4-wq38](https://data.cdc.gov/d/psx4-wq38)), printed with this note:

> Source: CDC, Mapping Injury, Overdose, and Violence (county drug overdose death rates from NCHS National Vital Statistics System death records). Available at no charge at https://data.cdc.gov/d/psx4-wq38. Metro rates are Cadastre's population-weighted averages of CDC's county rates, not CDC figures.
>
> Use of CDC data does not imply endorsement by CDC, ATSDR, HHS or the U.S. Government of Cadastre or its services.

## Measures

The key is the measure's identifier in Cadastre. A measure stored for the metro itself is read as stored; **Rule from counties** is how a metro is assembled from its counties where it is not (see [Methodology](https://getcadastre.com/docs/methodology)).

| Key | Label | Unit | Rule from counties |
| --- | --- | --- | --- |
| `cdc_drug_overdose_death_rate` | Drug overdose death rate, per 100,000 (CDC) | deaths per 100,000 residents in the calendar year (CDC county rates from NCHS death records, by county of residence; counties with 1-9 deaths are suppressed by CDC and left out); metro value is Cadastre's population-weighted average of CDC county rates | mean of member counties weighted by Population, over the counties with a value (unavailable where those hold under 80% of it) |

## Known gaps and caveats

- CDC suppresses counts of 1 to 9 deaths and publishes a modelled rate in their place. Those counties have no value in Cadastre (never the modelled rate, never 0); a published count of 0 is a real 0.
- All drugs, not opioids alone.
- Connecticut replaced its eight counties with nine planning regions, which Census geography now uses; this file still uses the legacy counties, so Connecticut metros have no value.
- The trailing-twelve-months period is not imported.

## See also

- [All datasets](https://getcadastre.com/docs/datasets)
- [Rights and attribution](https://getcadastre.com/docs/rights)
- [Data freshness](https://getcadastre.com/docs/freshness)