CGB FERTILITY UNIT, year by year
Everything the Spanish National Activity Registry publishes about CGB FERTILITY UNIT between 2022 and 2023: 2 years with data. Each year carries its own attribution, because each year is a separate publication of the registry.
Volume first
Activity comes before results on purpose: a high percentage over few cycles does not mean what the same percentage over many cycles means. The registry publishes cycles as bands and that is how we show them, never reduced to a single figure; transfers are an exact count.
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| Year | Value |
|---|---|
| 2022 | 17 |
| 2023 | 30 |
See this chart’s data
| Year | Value |
|---|---|
| 2023 | 1 |
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.
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| Year | Frozen embryos |
|---|---|
| 2022 | 100 – 100% |
| 2023 | 19 – 81% |
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| Year | Frozen embryos |
|---|---|
| 2022 | 6.2 – 79.5% |
| 2023 | 23.8 – 76.2% |
- Fresh embryos
- Frozen embryos
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| Year | Fresh embryos | Frozen embryos |
|---|---|---|
| 2022 | — | 0 – 67.4% |
| 2023 | 100 – 100% | — |
See this chart’s data
| Year | Under 35 |
|---|---|
| 2023 | 0 – 31.6% |
See this chart’s data
| Year | Between 35 and 39 |
|---|---|
| 2023 | 0 – 86.7% |
See this chart’s data
| Year | Under 35 |
|---|---|
| 2023 | 0 – 82.9% |
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 | Transfers | Pregnancy per cycle (insemination) | Attribution |
|---|---|---|---|---|
| 2022 | CGB FERTILITY UNIT | 17 | No data | Registro Nacional de Actividad 2022-Registro SEF |
| 2023 | CGB FERTILITY UNIT | 31 | 0 – 31.6% | 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 CGB FERTILITY UNIT profile
Source: “Registro Nacional de Actividad 2023-Registro SEF” (Spanish National ART Activity Registry) — registrosef.com, retrieved 31 July 2026.