Everything the Spanish National Activity Registry publishes about Centro Ginecológico de León between 2014 and 2023: 10 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
2014
130
2015
174
2016
171
2017
161
2018
137
2019
138
2020
109
2021
102
2022
87
2023
84
Transfers recorded per year — Egg donationSee this chart’s data
Transfers recorded per year — Egg donation
Year
Value
2014
74
2015
75
2016
72
2017
80
2018
63
2019
73
2020
29
2021
55
2022
49
2023
49
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
2014
23.8 – 76.2%
8.1 – 44%
2015
53.8 – 96.2%
14.5 – 52.2%
2016
23.8 – 76.2%
19.4 – 68.1%
2017
0 – 82.9%
24.5 – 63.5%
2018
15.4 – 84.6%
0 – 19.3%
2019
4 – 71%
16 – 74.9%
2020
28.9 – 100%
23.2 – 66.8%
2021
0 – 82.9%
16 – 74.9%
2022
13.3 – 100%
23.2 – 63.7%
2023
0 – 46.5%
28.1 – 78.6%
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
2014
28.5 – 57.8%
0 – 32.2%
2015
22.1 – 50.6%
14.6 – 46%
2016
37.5 – 67%
14.1 – 44.7%
2017
19.1 – 44.9%
15.6 – 51.1%
2018
38.8 – 75.5%
21.2 – 57.4%
2019
30.3 – 63.8%
23.8 – 56.2%
2020
52.1 – 90.8%
10 – 40%
2021
46.4 – 99%
29.6 – 64.2%
2022
20.5 – 93.8%
19.8 – 57.2%
2023
26.9 – 73.1%
23.3 – 61.3%
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
2014
0 – 24%
0 – 25.6%
2015
7.4 – 31.6%
0 – 28.7%
2016
8.4 – 34.9%
6.9 – 39.3%
2017
1 – 24%
2.1 – 34.3%
2018
15.5 – 45.6%
2.1 – 34.3%
2019
9 – 41%
—
2020
15.2 – 64.8%
0 – 30.5%
2021
0 – 25.6%
10.4 – 45.6%
2022
1.6 – 58.4%
11.6 – 55.1%
2023
0 – 67.4%
0 – 30.5%
Egg donation · Under 35
Fresh embryos
Frozen embryos
See this chart’s data
Egg donation · Under 35
Year
Fresh embryos
Frozen embryos
2014
0 – 67.4%
—
2016
—
1 – 99%
2017
100 – 100%
—
2022
—
0 – 100%
2023
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
2014
45 – 100%
10 – 90%
2015
44.1 – 94.3%
0 – 62%
2016
6.2 – 79.5%
0 – 40.2%
2017
51 – 95.7%
1 – 99%
2018
44.9 – 100%
—
2019
29 – 96%
6.2 – 79.5%
2020
1 – 99%
—
2021
44.9 – 100%
13.3 – 100%
2022
100 – 100%
0 – 86.7%
2023
100 – 100%
0 – 46.5%
Egg donation · Over 40
Fresh embryos
Frozen embryos
See this chart’s data
Egg donation · Over 40
Year
Fresh embryos
Frozen embryos
2014
44.1 – 78.4%
2.7 – 39.4%
2015
36.5 – 75.5%
14.2 – 47.9%
2016
23.3 – 61.3%
18 – 53.5%
2017
44.7 – 81.2%
9.6 – 38.9%
2018
52.1 – 85.8%
9 – 41%
2019
40.8 – 72.7%
13.2 – 53.5%
2020
68.4 – 100%
13.8 – 61.2%
2021
21.5 – 67.4%
24.5 – 61.2%
2022
38.5 – 81.5%
19.2 – 59.1%
2023
19.1 – 73.3%
9.4 – 42.5%
AIH — artificial insemination (partner’s sperm) · Under 40See this chart’s data
AIH — artificial insemination (partner’s sperm) · Under 40
Year
Under 40
2014
11 – 31.6%
AIH — artificial insemination (partner’s sperm) · Under 35See this chart’s data
AIH — artificial insemination (partner’s sperm) · Under 35
Year
Under 35
2015
2.1 – 34.3%
2016
0 – 23.8%
2017
0 – 62%
2018
0 – 41%
2019
10 – 90%
2020
0 – 30.5%
2021
0 – 46.5%
2022
0 – 30.5%
2023
9.6 – 70.4%
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
3.4 – 43.7%
2016
0 – 35.4%
2018
0 – 49.4%
2019
15.4 – 84.6%
2020
1.9 – 32.9%
2021
6.2 – 79.5%
2022
3.4 – 43.7%
2023
0 – 46.5%
AID — artificial insemination (donor sperm) · Under 40See this chart’s data
AID — artificial insemination (donor sperm) · Under 40
Year
Under 40
2014
0 – 24.3%
AID — artificial insemination (donor sperm) · Under 35See this chart’s data
AID — artificial insemination (donor sperm) · Under 35
Year
Under 35
2016
0 – 44.8%
2017
0 – 67.4%
2018
17.1 – 100%
2019
0 – 55.1%
2021
0 – 71.1%
2022
0 – 37.9%
2023
0 – 100%
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
2015
0 – 32.6%
2017
0 – 49.4%
2018
1 – 99%
2019
0 – 46.5%
2021
2.3 – 35.8%
2022
0 – 31.6%
2023
0 – 55.1%
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
Cycles started
Transfers
Pregnancy per transfer (under 35)
Pregnancy per cycle (insemination)
Attribution
2014
Centro Ginecológico de León
100-500
204
23.8 – 76.2%
11 – 31.6%
Registro Nacional de Actividad 2014-Registro SEF
2015
Centro Ginecológico de León
100-500
249
53.8 – 96.2%
2.1 – 34.3%
Registro Nacional de Actividad 2015-Registro SEF
2016
Centro Ginecológico de León
100-500
243
23.8 – 76.2%
0 – 23.8%
Registro Nacional de Actividad 2016-Registro SEF
2017
Centro Ginecológico de León
100-500
241
0 – 82.9%
0 – 62%
Registro Nacional de Actividad 2017-Registro SEF
2018
Centro Ginecológico de León
100-500
200
15.4 – 84.6%
0 – 41%
Registro Nacional de Actividad 2018-Registro SEF
2019
Centro Ginecológico de León
100-500
211
4 – 71%
10 – 90%
Registro Nacional de Actividad 2019-Registro SEF
2020
Centro Ginecológico de León
No data
138
28.9 – 100%
0 – 30.5%
Registro Nacional de Actividad 2020-Registro SEF
2021
Centro Ginecológico de León
No data
157
0 – 82.9%
0 – 46.5%
Registro Nacional de Actividad 2021-Registro SEF
2022
Centro Ginecológico de León
No data
136
13.3 – 100%
0 – 30.5%
Registro Nacional de Actividad 2022-Registro SEF
2023
Centro Ginecológico de León
No data
133
0 – 46.5%
9.6 – 70.4%
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.
