Table 1 Criteria for selecting the countries for comparing the institution of national unique health identifier numbers
From: Unique health identifiers for universal health coverage
| Â | Slovenia | South Korea | Thailand | England |
|---|---|---|---|---|
Achieved universal health coverage | Yes | Yes | Yes | Yes |
Income classification when UHC was achieved | High | High | Lower-middle* | High |
Has in place a functioning civil registration system | Yes | Yes | Yes | Yes |
Assigns a national unique identification number (UIN) | Yes | Yes | Yes | No |
Assigns a national unique health identifier (UHI) | Yes; UIN and UHI are highly linked | No; UIN is used as UHI | No; UIN is used as UHI | Yes |