Everything the Spanish National Activity Registry publishes about CER Santander between 2009 and 2023: 15 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.
Transfers recorded per year — IVF/ICSI with own oocytesSee this chart’s data
Transfers recorded per year — IVF/ICSI with own oocytes
Year
Value
2009
53
2010
15
2011
22
2012
48
2013
62
2014
69
2015
60
2016
25
2017
36
2018
34
2019
39
2020
28
2021
31
2022
49
2023
47
Transfers recorded per year — Egg donationSee this chart’s data
Transfers recorded per year — Egg donation
Year
Value
2009
10
2010
2
2011
5
2012
13
2013
16
2014
27
2015
21
2016
33
2017
11
2018
13
2019
5
2020
2
2021
9
2022
4
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.
IVF/ICSI with own oocytes · Under 35
Fresh embryos
Frozen embryos
See this chart’s data
IVF/ICSI with own oocytes · Under 35
Year
Fresh embryos
Frozen embryos
2009
22.5 – 57.5%
36.9 – 72.5%
2010
0 – 82.9%
0 – 82.9%
2011
0 – 28.6%
0 – 38.5%
2012
0 – 26.1%
4.3 – 59.3%
2013
2.7 – 39.4%
21.8 – 83.7%
2014
5.7 – 55.9%
0 – 26.1%
2015
0 – 62%
0.2 – 46%
2016
0 – 100%
—
2017
—
0 – 55.1%
2018
0 – 67.4%
0 – 62%
2019
0 – 100%
0 – 55%
2020
0 – 86.7%
0 – 40.2%
2021
0 – 100%
0 – 46.5%
2022
—
4.9 – 52.2%
2023
—
0 – 37.8%
IVF/ICSI with own oocytes · Between 35 and 39
Fresh embryos
Frozen embryos
See this chart’s data
IVF/ICSI with own oocytes · Between 35 and 39
Year
Fresh embryos
Frozen embryos
2009
4.9 – 52.2%
4.9 – 52.2%
2010
4 – 71%
4 – 71%
2011
2.5 – 64.1%
10 – 74.5%
2012
0 – 37.8%
2.7 – 53.6%
2013
0 – 27.1%
6.7 – 43.8%
2014
2.5 – 37.5%
1.6 – 58.4%
2015
0.5 – 49.5%
0 – 30.5%
2016
—
17.1 – 100%
2017
0 – 40.2%
0 – 24%
2018
0 – 46.5%
0 – 55.1%
2019
0 – 86.7%
5.7 – 55.9%
2020
0 – 55.1%
2.5 – 64.1%
2021
—
0 – 35.8%
2022
0 – 86.7%
0 – 44.8%
2023
—
0 – 25.7%
IVF/ICSI with own oocytes · Over 40
Fresh embryos
Frozen embryos
See this chart’s data
IVF/ICSI with own oocytes · Over 40
Year
Fresh embryos
Frozen embryos
2009
0 – 40.2%
0 – 40.2%
2010
0 – 0%
0 – 0%
2011
0 – 0%
0 – 0%
2012
0 – 0%
0 – 0%
2013
0 – 100%
0 – 24%
2014
0 – 24%
—
2015
0 – 35.4%
0 – 82.9%
2019
—
0 – 31.6%
2020
—
0 – 100%
2022
—
0 – 21.1%
Egg donation · Under 35
Fresh embryos
Frozen embryos
See this chart’s data
Egg donation · Under 35
Year
Fresh embryos
Frozen embryos
2009
0 – 0%
0 – 0%
2010
0 – 0%
0 – 0%
2011
0 – 0%
0 – 0%
2012
0 – 0%
0 – 0%
2013
0 – 0%
0 – 0%
2014
—
0 – 100%
2015
—
0 – 86.7%
2016
100 – 100%
—
2018
100 – 100%
—
Egg donation · Between 35 and 39
Fresh embryos
Frozen embryos
See this chart’s data
Egg donation · Between 35 and 39
Year
Fresh embryos
Frozen embryos
2009
0 – 0%
0 – 0%
2010
0 – 0%
0 – 0%
2011
0 – 0%
0 – 0%
2012
0 – 0%
0 – 0%
2013
0 – 55.1%
0 – 55.1%
2014
0 – 67.4%
19 – 81%
2015
0 – 71.1%
—
2016
0 – 46.5%
—
2017
—
100 – 100%
2018
—
1 – 99%
2019
100 – 100%
100 – 100%
2021
—
0 – 100%
Egg donation · Over 40
Fresh embryos
Frozen embryos
See this chart’s data
Egg donation · Over 40
Year
Fresh embryos
Frozen embryos
2009
59.8 – 100%
100 – 100%
2010
0 – 100%
0 – 100%
2011
0 – 0%
0 – 0%
2012
0 – 49.4%
0 – 49.4%
2013
0 – 46.5%
39.3 – 100%
2014
0 – 62%
0 – 67.4%
2015
—
0 – 86.7%
2016
—
0 – 24%
2017
0 – 100%
6.2 – 79.5%
2021
0 – 100%
—
AIH — artificial insemination (partner’s sperm) · Under 40See this chart’s data
AIH — artificial insemination (partner’s sperm) · Under 40
Year
Under 40
2009
2.3 – 16.8%
2010
2 – 21.2%
2011
0 – 21.1%
2012
0 – 0%
2013
0 – 0%
2014
0 – 22.2%
AIH — artificial insemination (partner’s sperm) · Under 35See this chart’s data
AIH — artificial insemination (partner’s sperm) · Under 35
Year
Under 35
2016
6.2 – 79.5%
2023
0 – 55.1%
AIH — artificial insemination (partner’s sperm) · Between 35 and 39See this chart’s data
AIH — artificial insemination (partner’s sperm) · Between 35 and 39
Year
Between 35 and 39
2015
0 – 55.1%
AID — artificial insemination (donor sperm) · Under 40See this chart’s data
AID — artificial insemination (donor sperm) · Under 40
Year
Under 40
2009
6.5 – 37.9%
2010
2.7 – 39.4%
2011
0 – 25.7%
2012
0 – 24%
2013
0 – 42.9%
2014
7.9 – 64.8%
AID — artificial insemination (donor sperm) · Under 35See this chart’s data
AID — artificial insemination (donor sperm) · Under 35
Year
Under 35
2015
100 – 100%
2018
0 – 100%
2021
0 – 35.4%
2023
100 – 100%
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 transfer (under 35)
Pregnancy per cycle (insemination)
Attribution
2009
CER Santander
63
22.5 – 57.5%
2.3 – 16.8%
Registro Nacional de Actividad 2009-Registro SEF
2010
CER Santander
17
0 – 82.9%
2 – 21.2%
Registro Nacional de Actividad 2010-Registro SEF
2011
CER Santander
27
0 – 28.6%
0 – 21.1%
Registro Nacional de Actividad 2011-Registro SEF
2012
CER Santander
61
0 – 26.1%
0 – 0%
Registro Nacional de Actividad 2012-Registro SEF
2013
CER Santander
78
2.7 – 39.4%
0 – 0%
Registro Nacional de Actividad 2013-Registro SEF
2014
CER Santander
96
5.7 – 55.9%
0 – 22.2%
Registro Nacional de Actividad 2014-Registro SEF
2015
CER Santander
81
0 – 62%
0 – 55.1%
Registro Nacional de Actividad 2015-Registro SEF
2016
CER Santander
58
0 – 100%
6.2 – 79.5%
Registro Nacional de Actividad 2016-Registro SEF
2017
CER Santander
47
No data
No data
Registro Nacional de Actividad 2017-Registro SEF
2018
CER Santander
47
0 – 67.4%
0 – 100%
Registro Nacional de Actividad 2018-Registro SEF
2019
CER Santander
44
0 – 100%
No data
Registro Nacional de Actividad 2019-Registro SEF
2020
CER Santander
30
0 – 86.7%
No data
Registro Nacional de Actividad 2020-Registro SEF
2021
CER Santander
40
0 – 100%
0 – 35.4%
Registro Nacional de Actividad 2021-Registro SEF
2022
CER Santander
53
No data
No data
Registro Nacional de Actividad 2022-Registro SEF
2023
CER Santander
47
No data
0 – 55.1%
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.
