| CA | CO | KY | NC | OH | |
|---|---|---|---|---|---|
| Population and Data Definitions | |||||
| Link Out-of-State Births | No | No | Yes | Yes | Yes |
| Require Delivery Claim | Yes | Yes | No | Yes | No |
| Additional Data Linkages Informing Mother’s Medicaid to Infant Birth Certificate Linkages | |||||
| Link Hospital Discharge Data to Mother’s’ Medicaid Data | Yes | No | No | Yes | No |
| Link Mother and Infant Medicaid Data* | No | No | No | Yes | Yes |
| Mother’s Medicaid and Infant Birth Certificate Variables Used in Matches | |||||
| Mother’s SSN (D) | No | Yes | Yes | Yes | Yes |
| Mother’s Name (P) | Yes | Yes | Yes | Yes | Yes |
| Father’s Name (M) | No | Yes | Yes | No | Yes** |
| Mother’s Date of Birth (DOB) (P) | Yes | Yes | Yes | Yes | Yes |
| Delivery Date (Mother’s Medicaid) and Infant’s DOB (infant birth certificate) (P) | Yes | Yes | Yes | Yes | Yes |
| Mother’s Residence (e.g., address, zip code) (P) | Yes | No | Yes | Yes | Yes |
| Medicaid Client Number/Enrollment Number | No | Yes | Yes | No | Yes |
| Phone Number (M) | No | No | No | No | Yes |
| Mother’s Race (M) | Yes | No | Yes | No | No |
| Delivery Method (M) | Yes | No | Yes | No | No |
| Linkage Software | |||||
| In-House Developed SAS Programs | Yes | Yes | Yes | Yes | Yes |
| Link Plus*** | No | No | No | Yes | Yes |
| LINKS*** | Yes | No | No | No | No |
| IBM InfoSphere*** | No | No | Yes | No | No |
NOTES: D = strongly suggested for use in a deterministic linkage step; P = strongly suggested for use in a probabilistic linkage step; M = strongly suggested for use in manual review only, where available.
Mothers’ and infants’ Medicaid data are not directly linked; instead, they are each independently linked to birth certificates.
Used only in manual review.
Probabilistic linkage software.
From: Linking State Medicaid Data and Birth Certificates For Maternal Health Research
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