Everything the Spanish National Activity Registry publishes about Hospital Clínico San Carlos between 2009 and 2023: 13 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
97
2012
354
2013
218
2014
327
2015
375
2016
427
2017
441
2018
431
2019
428
2020
300
2021
339
2022
296
2023
378
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
8.3 – 29.4%
8.3 – 29.4%
2012
28.1 – 51.3%
31.8 – 51.3%
2013
35.2 – 67.5%
44.5 – 70.6%
2014
29 – 56.7%
22.7 – 46%
2015
41.2 – 68.6%
29.4 – 48%
2016
32 – 55.9%
29.2 – 49.9%
2017
36.4 – 63.6%
35.3 – 57.2%
2018
32.5 – 61.1%
38.9 – 59.9%
2019
31.1 – 61.6%
31.8 – 53.9%
2020
3.8 – 46.2%
26.3 – 48.7%
2021
0 – 42.9%
29.9 – 50.5%
2022
21.5 – 67.4%
37.7 – 60.9%
2023
20.4 – 61.5%
32.4 – 52.1%
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
5.8 – 26.2%
8.3 – 30.2%
2012
25.8 – 45.2%
28.8 – 46.1%
2013
15.7 – 37.4%
22.5 – 42.8%
2014
35 – 55.3%
19.3 – 36.2%
2015
28.8 – 49.7%
32.3 – 50%
2016
28.3 – 45.3%
20.5 – 36.4%
2017
36.3 – 52.9%
30.4 – 47.2%
2018
24.7 – 43.3%
31.1 – 46%
2019
25.7 – 42.7%
26.3 – 41.8%
2020
24.7 – 56.4%
34 – 50.3%
2021
20.4 – 51.8%
33.2 – 47.5%
2022
17.5 – 46%
30.1 – 46.4%
2023
21.8 – 46%
34.1 – 48.9%
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 – 41%
0 – 41%
2012
0 – 55.1%
0 – 42.1%
2013
0 – 67.4%
0 – 67.4%
2014
0 – 46.5%
—
2015
10 – 90%
0 – 31.6%
2016
4.9 – 52.2%
0.2 – 46%
2017
4.9 – 52.2%
18.8 – 55.3%
2018
2.7 – 39.4%
30.4 – 86.2%
2019
4.1 – 34.4%
28.1 – 71.9%
2020
0 – 82.9%
5.7 – 34.3%
2021
0 – 82.9%
13.8 – 61.2%
2022
0 – 40.2%
19.2 – 59.1%
2023
0 – 40.2%
16.3 – 56.5%
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%
2012
0 – 0%
0 – 0%
2013
0 – 0%
0 – 0%
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%
2012
0 – 0%
0 – 0%
2013
0 – 0%
0 – 0%
Egg donation · Over 40
Fresh embryos
Frozen embryos
See this chart’s data
Egg donation · Over 40
Year
Fresh embryos
Frozen embryos
2009
0 – 0%
0 – 0%
2012
0 – 0%
0 – 0%
2013
0 – 0%
0 – 0%
AIH — artificial insemination (partner’s sperm) · Under 40See this chart’s data
AIH — artificial insemination (partner’s sperm) · Under 40
Year
Under 40
2009
8.4 – 16.8%
2012
7.6 – 14.2%
2013
7.7 – 18.7%
2014
7.8 – 18.2%
AIH — artificial insemination (partner’s sperm) · Under 35See this chart’s data
AIH — artificial insemination (partner’s sperm) · Under 35
Year
Under 35
2015
11.5 – 28.5%
2016
1.4 – 15.8%
2017
11.3 – 35.5%
2018
1.7 – 13.3%
2019
0 – 17.8%
2020
7.3 – 35.2%
2021
3.2 – 22.3%
2022
6.1 – 19.7%
2023
8.9 – 22.1%
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
1.2 – 25.5%
2016
1.3 – 27.2%
2017
8.9 – 36.8%
2018
6.1 – 30.7%
2019
0 – 30.6%
2020
0 – 16.1%
2021
0 – 10.4%
2022
8.3 – 23.6%
2023
1.8 – 13.8%
AID — artificial insemination (donor sperm) · Under 40See this chart’s data
AID — artificial insemination (donor sperm) · Under 40
Year
Under 40
2009
0 – 0%
2012
0 – 0%
2013
0 – 0%
AID — artificial insemination (donor sperm) · Under 35See this chart’s data
AID — artificial insemination (donor sperm) · Under 35
Year
Under 35
2016
0 – 100%
2017
0 – 30.5%
2018
25.1 – 84%
2019
25.1 – 84%
2020
0 – 49.4%
2021
3.4 – 43.7%
2022
17.3 – 42.7%
2023
9.8 – 33.7%
AID — artificial insemination (donor sperm) · Between 35 and 39See this chart’s data
AID — artificial insemination (donor sperm) · Between 35 and 39
Year
Between 35 and 39
2017
0 – 42.9%
2018
0 – 24.7%
2019
9.9 – 50.1%
2020
4.3 – 28.1%
2021
0 – 11.8%
2022
5.9 – 20.3%
2023
8.1 – 23%
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
Cycles started
Transfers
Pregnancy per transfer (under 35)
Pregnancy per cycle (insemination)
Attribution
2009
Hospital Clínico San Carlo
100-500
97
8.3 – 29.4%
8.4 – 16.8%
Registro Nacional de Actividad 2009-Registro SEF
2010
No data
2011
No data
2012
Hospital Clínico San Carlos
100-500
354
28.1 – 51.3%
7.6 – 14.2%
Registro Nacional de Actividad 2012-Registro SEF
2013
Hospital Clínico San Carlos
100-500
218
35.2 – 67.5%
7.7 – 18.7%
Registro Nacional de Actividad 2013-Registro SEF
2014
Hospital Clínico San Carlos
100-500
327
29 – 56.7%
7.8 – 18.2%
Registro Nacional de Actividad 2014-Registro SEF
2015
Hospital Clínico San Carlos
100-500
375
41.2 – 68.6%
11.5 – 28.5%
Registro Nacional de Actividad 2015-Registro SEF
2016
Hospital Clínico San Carlos
100-500
427
32 – 55.9%
1.4 – 15.8%
Registro Nacional de Actividad 2016-Registro SEF
2017
Hospital Clínico San Carlos
100-500
441
36.4 – 63.6%
11.3 – 35.5%
Registro Nacional de Actividad 2017-Registro SEF
2018
Hospital Clínico San Carlos
100-500
431
32.5 – 61.1%
1.7 – 13.3%
Registro Nacional de Actividad 2018-Registro SEF
2019
Hospital Clínico San Carlos
100-500
428
31.1 – 61.6%
0 – 17.8%
Registro Nacional de Actividad 2019-Registro SEF
2020
Hospital Clínico San Carlos
100-500
300
3.8 – 46.2%
7.3 – 35.2%
Registro Nacional de Actividad 2020-Registro SEF
2021
Hospital Clínico San Carlos
100-500
339
0 – 42.9%
3.2 – 22.3%
Registro Nacional de Actividad 2021-Registro SEF
2022
Hospital Clínico San Carlos
100-500
296
21.5 – 67.4%
6.1 – 19.7%
Registro Nacional de Actividad 2022-Registro SEF
2023
Hospital Clínico San Carlos
100-500
378
20.4 – 61.5%
8.9 – 22.1%
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.
