Factors associated with recent increase of multiple births in Spain
- Autores
- Fuster Siebert, Vicente; Zuluaga, Pilar; Colantonio, Sonia Edith; De Blas, Clemente
- Año de publicación
- 2008
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The increased incidence of multiple deliveries in Spain, in addition to changes in age at maternity and parity, is attributed to assisted reproductive treatments, but the relative contribution of the latter to this rise remains uncertain, due to the scarce information provided by clinics practicing those treatments. Population based data (1984-2004), including information on mother's age, nationality, marital status, date of delivery, and the characteristics of each (parity, single or multiple), and sex of newborns were provided by the Spanish Institute of Statistics. Twinning and triplet deliveries relate to maternal age, parity, and nationality. For younger ages (≤ 19, 20-24, 25-29) rates remained constant over time, but for older women (30-34, 35-39, ≥ 40) rates increased after 1994. From 1984 to 2004 the percentage of twins of opposite sex increased from 24.31 to 36.58 per cent. Since 1997, Spanish and non-Spanish mothers differentiate with respect to multiple maternity at ages over 30. In addition to unmarried Spanish women, immigrants constitute a reliable reference group that determines the convenience of segregating information on multiple deliveries respecting origin. The proportion of twins and triplets of opposite sex, maternal age, and parity patterns observed are concordant with a differential access to reproductive treatments depending on the woman's age. The present norm regulating the maximum number of fertilizations per cycle and the demand for these treatments explain the high incidence of multiple deliveries in Spain. A modified logistic curve predicts a stabilization of multiple deliveries, which will probably continue to be high in Spain.
Fil: Fuster Siebert, Vicente. Universidad Complutense de Madrid; España
Fil: Zuluaga, Pilar. Universidad Complutense de Madrid; España
Fil: Colantonio, Sonia Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones y Estudios sobre Cultura y Sociedad. Universidad Nacional de Córdoba. Centro de Investigaciones y Estudios sobre Cultura y Sociedad; Argentina
Fil: De Blas, Clemente. National Institute of Statistics; España - Materia
-
MILTIPLR DELIVERIES
ASSISTED REPRODUCTIVE TREATMENTS
TWINNING AND TRIPLET DELIVERIES
SPAIN - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/129806
Ver los metadatos del registro completo
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Factors associated with recent increase of multiple births in SpainFuster Siebert, VicenteZuluaga, PilarColantonio, Sonia EdithDe Blas, ClementeMILTIPLR DELIVERIESASSISTED REPRODUCTIVE TREATMENTSTWINNING AND TRIPLET DELIVERIESSPAINhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The increased incidence of multiple deliveries in Spain, in addition to changes in age at maternity and parity, is attributed to assisted reproductive treatments, but the relative contribution of the latter to this rise remains uncertain, due to the scarce information provided by clinics practicing those treatments. Population based data (1984-2004), including information on mother's age, nationality, marital status, date of delivery, and the characteristics of each (parity, single or multiple), and sex of newborns were provided by the Spanish Institute of Statistics. Twinning and triplet deliveries relate to maternal age, parity, and nationality. For younger ages (≤ 19, 20-24, 25-29) rates remained constant over time, but for older women (30-34, 35-39, ≥ 40) rates increased after 1994. From 1984 to 2004 the percentage of twins of opposite sex increased from 24.31 to 36.58 per cent. Since 1997, Spanish and non-Spanish mothers differentiate with respect to multiple maternity at ages over 30. In addition to unmarried Spanish women, immigrants constitute a reliable reference group that determines the convenience of segregating information on multiple deliveries respecting origin. The proportion of twins and triplets of opposite sex, maternal age, and parity patterns observed are concordant with a differential access to reproductive treatments depending on the woman's age. The present norm regulating the maximum number of fertilizations per cycle and the demand for these treatments explain the high incidence of multiple deliveries in Spain. A modified logistic curve predicts a stabilization of multiple deliveries, which will probably continue to be high in Spain.Fil: Fuster Siebert, Vicente. Universidad Complutense de Madrid; EspañaFil: Zuluaga, Pilar. Universidad Complutense de Madrid; EspañaFil: Colantonio, Sonia Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones y Estudios sobre Cultura y Sociedad. Universidad Nacional de Córdoba. Centro de Investigaciones y Estudios sobre Cultura y Sociedad; ArgentinaFil: De Blas, Clemente. National Institute of Statistics; EspañaAustralian Acad Press2008-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/129806Fuster Siebert, Vicente; Zuluaga, Pilar; Colantonio, Sonia Edith; De Blas, Clemente; Factors associated with recent increase of multiple births in Spain; Australian Acad Press; Twin Research And Human Genetics; 11; 1; 11-2008; 70-761832-42741839-2628CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1375/twin.11.1.70info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/twin-research-and-human-genetics/article/factors-associated-with-recent-increase-of-multiple-births-in-spain/DA8E7D4D9ABD4FA7707873D0AAA6FDE1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:14:58Zoai:ri.conicet.gov.ar:11336/129806instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:14:58.342CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Factors associated with recent increase of multiple births in Spain |
title |
Factors associated with recent increase of multiple births in Spain |
spellingShingle |
Factors associated with recent increase of multiple births in Spain Fuster Siebert, Vicente MILTIPLR DELIVERIES ASSISTED REPRODUCTIVE TREATMENTS TWINNING AND TRIPLET DELIVERIES SPAIN |
title_short |
Factors associated with recent increase of multiple births in Spain |
title_full |
Factors associated with recent increase of multiple births in Spain |
title_fullStr |
Factors associated with recent increase of multiple births in Spain |
title_full_unstemmed |
Factors associated with recent increase of multiple births in Spain |
title_sort |
Factors associated with recent increase of multiple births in Spain |
dc.creator.none.fl_str_mv |
Fuster Siebert, Vicente Zuluaga, Pilar Colantonio, Sonia Edith De Blas, Clemente |
author |
Fuster Siebert, Vicente |
author_facet |
Fuster Siebert, Vicente Zuluaga, Pilar Colantonio, Sonia Edith De Blas, Clemente |
author_role |
author |
author2 |
Zuluaga, Pilar Colantonio, Sonia Edith De Blas, Clemente |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
MILTIPLR DELIVERIES ASSISTED REPRODUCTIVE TREATMENTS TWINNING AND TRIPLET DELIVERIES SPAIN |
topic |
MILTIPLR DELIVERIES ASSISTED REPRODUCTIVE TREATMENTS TWINNING AND TRIPLET DELIVERIES SPAIN |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The increased incidence of multiple deliveries in Spain, in addition to changes in age at maternity and parity, is attributed to assisted reproductive treatments, but the relative contribution of the latter to this rise remains uncertain, due to the scarce information provided by clinics practicing those treatments. Population based data (1984-2004), including information on mother's age, nationality, marital status, date of delivery, and the characteristics of each (parity, single or multiple), and sex of newborns were provided by the Spanish Institute of Statistics. Twinning and triplet deliveries relate to maternal age, parity, and nationality. For younger ages (≤ 19, 20-24, 25-29) rates remained constant over time, but for older women (30-34, 35-39, ≥ 40) rates increased after 1994. From 1984 to 2004 the percentage of twins of opposite sex increased from 24.31 to 36.58 per cent. Since 1997, Spanish and non-Spanish mothers differentiate with respect to multiple maternity at ages over 30. In addition to unmarried Spanish women, immigrants constitute a reliable reference group that determines the convenience of segregating information on multiple deliveries respecting origin. The proportion of twins and triplets of opposite sex, maternal age, and parity patterns observed are concordant with a differential access to reproductive treatments depending on the woman's age. The present norm regulating the maximum number of fertilizations per cycle and the demand for these treatments explain the high incidence of multiple deliveries in Spain. A modified logistic curve predicts a stabilization of multiple deliveries, which will probably continue to be high in Spain. Fil: Fuster Siebert, Vicente. Universidad Complutense de Madrid; España Fil: Zuluaga, Pilar. Universidad Complutense de Madrid; España Fil: Colantonio, Sonia Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones y Estudios sobre Cultura y Sociedad. Universidad Nacional de Córdoba. Centro de Investigaciones y Estudios sobre Cultura y Sociedad; Argentina Fil: De Blas, Clemente. National Institute of Statistics; España |
description |
The increased incidence of multiple deliveries in Spain, in addition to changes in age at maternity and parity, is attributed to assisted reproductive treatments, but the relative contribution of the latter to this rise remains uncertain, due to the scarce information provided by clinics practicing those treatments. Population based data (1984-2004), including information on mother's age, nationality, marital status, date of delivery, and the characteristics of each (parity, single or multiple), and sex of newborns were provided by the Spanish Institute of Statistics. Twinning and triplet deliveries relate to maternal age, parity, and nationality. For younger ages (≤ 19, 20-24, 25-29) rates remained constant over time, but for older women (30-34, 35-39, ≥ 40) rates increased after 1994. From 1984 to 2004 the percentage of twins of opposite sex increased from 24.31 to 36.58 per cent. Since 1997, Spanish and non-Spanish mothers differentiate with respect to multiple maternity at ages over 30. In addition to unmarried Spanish women, immigrants constitute a reliable reference group that determines the convenience of segregating information on multiple deliveries respecting origin. The proportion of twins and triplets of opposite sex, maternal age, and parity patterns observed are concordant with a differential access to reproductive treatments depending on the woman's age. The present norm regulating the maximum number of fertilizations per cycle and the demand for these treatments explain the high incidence of multiple deliveries in Spain. A modified logistic curve predicts a stabilization of multiple deliveries, which will probably continue to be high in Spain. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-11 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/129806 Fuster Siebert, Vicente; Zuluaga, Pilar; Colantonio, Sonia Edith; De Blas, Clemente; Factors associated with recent increase of multiple births in Spain; Australian Acad Press; Twin Research And Human Genetics; 11; 1; 11-2008; 70-76 1832-4274 1839-2628 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/129806 |
identifier_str_mv |
Fuster Siebert, Vicente; Zuluaga, Pilar; Colantonio, Sonia Edith; De Blas, Clemente; Factors associated with recent increase of multiple births in Spain; Australian Acad Press; Twin Research And Human Genetics; 11; 1; 11-2008; 70-76 1832-4274 1839-2628 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1375/twin.11.1.70 info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/twin-research-and-human-genetics/article/factors-associated-with-recent-increase-of-multiple-births-in-spain/DA8E7D4D9ABD4FA7707873D0AAA6FDE1 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Australian Acad Press |
publisher.none.fl_str_mv |
Australian Acad Press |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |