H.U. Severo Ochoa, year by year
Everything the Spanish National Activity Registry publishes about H.U. Severo Ochoa between 2009 and 2023: 9 years with data. Each year carries its own attribution, because each year is a separate publication of the registry.
Results, year by year
Each band is the interval the registry published that year: the floor and the ceiling of the estimate, not a point. There is no line joining the years, and that is deliberate — joining the centres of successive intervals would assert a trend the data does not support.
See this chart’s data
| Year | Under 40 |
|---|---|
| 2009 | 8.9 – 15.8% |
| 2010 | 6.7 – 12.7% |
| 2011 | 10.7 – 19.3% |
| 2012 | 13.3 – 22.8% |
| 2013 | 9.9 – 18% |
| 2014 | 12.4 – 21% |
See this chart’s data
| Year | Under 35 |
|---|---|
| 2015 | 9.6 – 21.1% |
| 2019 | 8.9 – 25.2% |
| 2023 | 18.1 – 41% |
See this chart’s data
| Year | Between 35 and 39 |
|---|---|
| 2015 | 8.6 – 20.4% |
| 2019 | 1.1 – 13.2% |
| 2023 | 2.7 – 25.9% |
See this chart’s data
| Year | Under 40 |
|---|---|
| 2009 | 7 – 34.2% |
| 2010 | 10.5 – 33.5% |
| 2011 | 7.7 – 23.2% |
| 2012 | 12.6 – 28.7% |
| 2013 | 13 – 30.9% |
| 2014 | 9 – 25.5% |
See this chart’s data
| Year | Under 35 |
|---|---|
| 2015 | 16.1 – 43% |
| 2019 | 20.7 – 44.8% |
| 2023 | 16.5 – 41.2% |
See this chart’s data
| Year | Between 35 and 39 |
|---|---|
| 2015 | 8.1 – 31% |
| 2019 | 14.4 – 33.1% |
| 2023 | 12.9 – 36.1% |
Year-by-year table
The table is the exact and complete reading: everything in the charts, and more. Each row cites the wording the registry requires for that year.
| Year | Name in the registry | Pregnancy per cycle (insemination) | Attribution |
|---|---|---|---|
| 2009 | H. Severo Ochoa | 8.9 – 15.8% | Registro Nacional de Actividad 2009-Registro SEF |
| 2010 | H. Severo Ochoa | 6.7 – 12.7% | Registro Nacional de Actividad 2010-Registro SEF |
| 2011 | H. Severo Ochoa | 10.7 – 19.3% | Registro Nacional de Actividad 2011-Registro SEF |
| 2012 | H. Severo Ochoa | 13.3 – 22.8% | Registro Nacional de Actividad 2012-Registro SEF |
| 2013 | H. Severo Ochoa | 9.9 – 18% | Registro Nacional de Actividad 2013-Registro SEF |
| 2014 | H. Severo Ochoa | 12.4 – 21% | Registro Nacional de Actividad 2014-Registro SEF |
| 2015 | H. Severo Ochoa | 9.6 – 21.1% | Registro Nacional de Actividad 2015-Registro SEF |
| 2016 | No data | ||
| 2017 | No data | ||
| 2018 | No data | ||
| 2019 | H. Severo Ochoa | 8.9 – 25.2% | Registro Nacional de Actividad 2019-Registro SEF |
| 2020 | No data | ||
| 2021 | No data | ||
| 2022 | No data | ||
| 2023 | H.U. Severo Ochoa | 18.1 – 41% | Registro Nacional de Actividad 2023-Registro SEF |
Gaps in the series, and how to read them
The registry’s province-by-province census returns empty for 2009 and 2010, even though the individual profiles for those years do exist and have been recovered one by one. A centre missing from a given year means the registry publishes no profile for it that year — not that it closed.
The registry’s template changed schema in 2014 and again in 2015: up to 2013, cycles, implantation and transfers are published without separating fresh from frozen embryos, and insemination is published for a single age band (“under 40”). That is why some years carry fewer series than others: it is what the source published, not a missing figure.
And most important: a change from one year to the next is not, on its own, an improvement or a decline. The patient mix changes, selection criteria change and, at small volumes, chance changes too. Wide intervals are precisely the signal that the exact number cannot be trusted.
Official guide: how to interpret a centre’s data (PDF, in Spanish)
← Back to the H.U. Severo Ochoa profile
Source: “Registro Nacional de Actividad 2023-Registro SEF” (Spanish National ART Activity Registry) — registrosef.com, retrieved 31 July 2026.