Statistical outputs on the register are classified according to whether they are disseminated nationally (either by the public sector body themselves, by the CSO or by data.gov.ie), or internationally (by Eurostat or by another international body). In addition, a number of nationally produced outputs have been certified as being in compliance with the Irish Statistical System Code of Practice (ISSCoP).
| Classification | Type of Statistic |
|---|---|
| Official Statistic - ISSCoP certified | National |
| Official Statistic - not yet ISSCoP certified | National |
| Experimental | National |
| European Statistic | International - Eurostat |
| International Statistic | International e.g. OECD |