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Update Access_OpioidUseTreatment.md #79

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Oct 19, 2023
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Update Access_OpioidUseTreatment.md #79

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9 changes: 5 additions & 4 deletions data_final/metadata/Access_OpioidUseTreatment.md
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**Meta Data Name**: Access to Opioid Treatment Programs (OTP)
**Added**: July 23, 2021
**Author**: Rachel Vigil
**Last Modified**: April 25, 2022, Susan Paykin
**Last Modified**: October 12, 2023
**Last Modified By**: Wataru Morioka

### Data Location:
Access07 - Access to Opioid Treatment Programs (OTP) at 2 spatial scales. Files can be found [here](https://github.com/GeoDaCenter/opioid-policy-scan/tree/v1.0/data_final).
Expand All @@ -26,9 +27,9 @@ We calculated travel-network access metrics for the driving travel time to the n
|:---------|:--------------------|:------------|
| GEOID | GEOID | Unique 11-digit GEOID for census tracts (state + county + tract) |
| ZIP Code Tract Area (ZCTA) | ZCTA5CE10 | Unique 5-digit assigned ZCTA, usually same as ZIP Code |
| Distance to nearest OTP | minDisOTP | Euclidean distance* from tract/zip centroid to nearest OTP service location, in miles |
| Driving time to nearest OTP | driveTime | Driving time from tract/zip origin centroid to the nearest tract/zip OTP destination centroid, in minutes |
| Count of OTPs | driveCount | Count of OTPs within a 30-minute driving threshold |
| Distance to nearest OTP | OtpMinDis | Euclidean distance* from tract/zip centroid to nearest OTP service location, in miles |
| Driving time to nearest OTP | OtpTmDr | Driving time from tract/zip origin centroid to the nearest tract/zip OTP destination centroid, in minutes |
| Count of OTPs | OtpCntDr | Count of OTPs within a 30-minute driving threshold |

### Data Limitations:
*Euclidean distance or straight-line distance is a simple approximation of distance or travel time from an origin centroid to the nearest health center. It is not a precise calculation of real travel times or distances.
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