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1.
Artículo en Inglés | MEDLINE | ID: mdl-38629470

RESUMEN

Objective: To examine claims for reversible prescription contraceptives and chlamydia and gonorrhea testing among commercially and Medicaid-insured adolescent and young adult (AYA) females in the United States. Methods: Using IBM MarketScan Research Databases, we identified sexually active, nonpregnant AYA (15- to 24-year-old) females enrolled in 2018. We examined claims for reversible prescription contraceptives and chlamydia and gonorrhea testing, using drug names and diagnosis/procedure codes, by age-group in commercially and Medicaid-insured separately and by race/ethnicity in Medicaid-insured. Results: Among 15- to 19-year-old and 20- to 24-year-old females, 67.2% and 67.9% of commercially insured and 57.3% and 54.0% of Medicaid-insured, respectively, had claims for reversible prescription contraceptives in 2018. Across insurance types among both age-groups, the most common claim for contraceptives was prescription for combined oral contraceptives. Among Medicaid-insured 15- to 19-year-olds, claims for contraceptives ranged from 42.6% for Hispanic females to 63.4% for non-Hispanic White females; among Medicaid-insured 20- to 24-year-olds, claims ranged from 50.4% for non-Hispanic Black females to 57.0% for non-Hispanic White females. Approximately half of the commercially and Medicaid-insured females had claims for chlamydia and gonorrhea testing. Non-Hispanic Black females had the highest percentages of claims for chlamydia testing (56.3% among 15- to 19-year-olds and 61.1% among 20- to 24-year-olds) and gonorrhea testing (61.6% among 15- to 19-year-olds and 64.9% among 20- to 24-year-olds). Conclusion: Approximately, two-thirds of commercially insured and more than half of Medicaid-insured, sexually active, nonpregnant AYA females had claims for reversible prescription contraceptives. Race/ethnicity data were available for Medicaid-insured females, and there were differences in claims for contraceptives and chlamydia and gonorrhea testing by race/ethnicity. Half of the AYA females had claims for chlamydia and gonorrhea testing suggesting missed opportunities.

2.
Fertil Steril ; 121(5): 756-764, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38246401

RESUMEN

OBJECTIVE: To study the contribution of ovulation induction and ovarian stimulation, in vitro fertilization (IVF), and unassisted conception to the increase in national plural births in the United States, a significant contributor to adverse maternal and infant health outcomes. DESIGN: National and IVF-assisted plural birth data were derived from the Centers for Disease Control and Prevention's National Vital Statistics System (1967-2021, after introduction of Clomiphene Citrate in the United States) and the National Assisted Reproductive Technology Surveillance System (1997-2021), respectively. SETTING: Not applicable. PATIENT(S): Not applicable. INTERVENTION(S): Not applicable. MAIN OUTCOME MEASURE(S): In addition to IVF-assisted plural births, the contributions of unassisted conception to plural births among women aged <35 and ≥35 years were estimated using plural birth rates from 1949-1966 and a Bayesian logistic model with race and age as independent variables. The contribution of ovulation induction and ovarian stimulation was estimated as the difference between national plural births and IVF-assisted and unassisted counterparts. RESULT(S): From 1967-2021, the national twin birth rate increased 1.7-fold to a 2014 high (33.9/1,000 live births), then declined to 31.2/1,000 live births; the triplet and higher order birth rate increased 6.7-fold to a 1998 high (1.9/1,000 live births), then declined to 0.8/1,000 live births. In 2021, the contribution of unassisted conception among women aged <35 years to the national plural births was 56.1%, followed by ovulation induction and ovarian stimulation (19.5%), unassisted conception among women aged ≥35 years (16.8%), and IVF (7.6%). During 2009-2021, the contribution of ovulation induction and ovarian stimulation has remained stable, the contribution of unassisted conception among women aged <35 and ≥35 years has increased, and the contribution of IVF has decreased. CONCLUSION(S): Ovulation induction and ovarian stimulation are leading iatrogenic contributors to plural births. They are, therefore, targets for intervention to reduce the adverse maternal and infant health outcomes associated with plural births. Maternal age of ≥35 years is a significant contributor to the national plural birth increase.


Asunto(s)
Fertilización In Vitro , Inducción de la Ovulación , Humanos , Femenino , Embarazo , Adulto , Inducción de la Ovulación/tendencias , Inducción de la Ovulación/estadística & datos numéricos , Inducción de la Ovulación/efectos adversos , Estados Unidos/epidemiología , Fertilización In Vitro/tendencias , Fertilización In Vitro/estadística & datos numéricos , Fertilización In Vitro/efectos adversos , Tasa de Natalidad/tendencias , Edad Materna , Factores de Riesgo , Adulto Joven , Nacimiento Vivo/epidemiología
3.
Womens Health Issues ; 34(2): 186-196, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38065719

RESUMEN

OBJECTIVE: We describe changes in commercial insurance claims for contraceptive services during the beginning of the COVID-19 pandemic. METHODS: We analyzed commercial insurance claims using IQVIA PharMetrics Plus data from more than 9 million U.S. females aged 15-49 years, enrolled during any month, January 2019 through September 2020. We calculated monthly rates of outpatient claims for intrauterine devices (IUDs), implants, and injectable contraception and monthly rates of pharmacy claims for contraceptive pills, patches, and rings. We used Joinpoint regression analysis to identify when statistically significant changes occurred in trends of monthly claims rates for each contraceptive method. We calculated monthly percentages of claims for contraceptive counseling via telehealth. RESULTS: Monthly claims rates decreased for IUDs (-50%) and implants (-43%) comparing February 2020 with April 2020 but rebounded by June 2020. Monthly claims rates for injectables decreased (-19%) comparing January 2019 with September 2020, and monthly claims rates for pills, patches, and rings decreased (-22%) comparing July 2019 with September 2020. The percentage of claims for contraceptive counseling occurring via telehealth was low (<1%) in 2019, increased to 34% in April 2020, and decreased to 9-12% in June-September 2020. CONCLUSIONS: Substantial changes in commercial insurance claims for contraceptive services occurred during the beginning of the COVID-19 pandemic, including transient decreases in IUD and implant claims and increases in telehealth contraceptive counseling claims. Contraceptive claims data can be used by decision makers to identify service gaps and evaluate use of interventions like telehealth to improve contraceptive access, including during public health emergencies.


Asunto(s)
COVID-19 , Anticonceptivos Femeninos , Seguro , Femenino , Estados Unidos/epidemiología , Humanos , Pandemias , COVID-19/epidemiología , Anticoncepción/métodos
4.
J Adolesc Health ; 71(1): 86-93, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35351354

RESUMEN

PURPOSE: In 2013, age restrictions for adolescents on over-the-counter access were removed for "Plan B One-Step", a single oral medication option for emergency contraception use. Restrictions on generic options of the emergency contraceptive pill (ECP) were removed in 2014. METHODS: National Survey of Family Growth data were used to assess the prevalence of ever use of ECPs among sexually experienced female adolescents and young adults (AYA) aged 15-24 years (2015-2017 sample), and trends in indicators of ECP use and acquisition (2006-2017 samples). Prevalence estimates were obtained by age subgroups for 15-17, 18-19, and 20-24 years. Statistical significance was determined using an alpha of .05 and 95% confidence intervals calculated around the point estimates. RESULTS: The weighted estimate of sexually experienced female AYA in the United States ranged from 13.3 million in 2006-2008 to 12.7 million in 2015-2017. The prevalence of ever ECP use was 18.2% (95% CI 15.7-21.1) and 31.8% (95% CI 26.9-37.1) in 2006-2008 and 2015-2017, respectively. Ever use in 2015-2017 varied by age group, number of lifetime opposite-sex partners and abortions, and experience of nonconsensual sex. In 2008-2010, 46.1% (95% CI 36.0-56.5) of respondents last obtained ECPs at community health or family planning clinics, and 31.8% (95% CI 22.9-42.2) last obtained ECPs at a pharmacy compared to 18.1% (95% CI 12.0-26.4) and 70.1% (95% CI 60.6-78.1) respectively in 2015-2017. Prevalence of provider counseling about emergency contraception in female AYA regardless of prior sexual experience in the past 12 months remained at or below 5% from 2006 to 2017. CONCLUSION: Increasing access to ECPs over-the-counter may have contributed to notable increases in reported ever use of ECPs and in the receipts from a pharmacy among AYA between 2006 and 2017. AYA may benefit if pharmacists and healthcare providers increase reproductive health counseling.


Asunto(s)
Aborto Inducido , Anticoncepción Postcoital , Anticonceptivos Poscoito , Adolescente , Anticonceptivos Poscoito/uso terapéutico , Servicios de Planificación Familiar , Femenino , Humanos , Medicamentos sin Prescripción/uso terapéutico , Embarazo , Conducta Sexual , Estados Unidos , Adulto Joven
5.
Fertil Steril ; 114(3): 567-578, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32680613

RESUMEN

OBJECTIVES: To assess trends, predictors, and perinatal outcomes of ovarian hyperstimulation syndrome (OHSS) associated with in vitro fertilization (IVF) cycles in the United States. DESIGN: Retrospective cohort study using National Assisted Reproductive Technology Surveillance System (NASS) data. SETTING: Not applicable. PATIENT(S): Fresh autologous and embryo-banking cycles performed from 2000 to 2015. INTERVENTIONS(S): None. MAIN OUTCOME MEASURE(S): OHSS, first-trimester loss, second-trimester loss, stillbirth, low birth weight, and preterm delivery. RESULT(S): The proportion of IVF cycles complicated by OHSS increased from 10.0 to 14.3 cases per 1,000 from 2000 to 2006, and decreased to 5.3 per 1,000 from 2006 to 2015. The risk of OHSS was highest for cycles with more than 30 oocytes retrieved (adjusted risk ratio [aRR] 3.85). OHSS was associated with a diagnosis of ovulatory disorder (aRR 2.61), tubal factor (aRR 1.14), uterine factor (aRR 1.17) and cycles resulting in pregnancy (aRR 3.12). In singleton pregnancies, OHSS was associated with increased risk of low birth weight (aRR 1.29) and preterm delivery (aRR 1.32). In twin pregnancies, OHSS was associated with an increased risk of second-trimester loss (aRR 1.81), low birth weight (aRR 1.06), and preterm delivery (aRR 1.16). CONCLUSION(S): Modifiable predictive factors for OHSS include number of oocytes retrieved, pregnancy following fresh embryo transfer, and the type of medication used for pituitary suppression during controlled ovarian hyperstimulation. Patients affected by OHSS had a higher risk of preterm delivery and low birth weight. Clinicians should take measures to reduce the risk of OHSS whenever possible.


Asunto(s)
Fármacos para la Fertilidad Femenina/efectos adversos , Infertilidad/terapia , Síndrome de Hiperestimulación Ovárica/inducido químicamente , Inducción de la Ovulación/efectos adversos , Ovulación/efectos de los fármacos , Aborto Espontáneo/epidemiología , Adulto , Peso al Nacer , Bases de Datos Factuales , Femenino , Fertilización In Vitro/efectos adversos , Edad Gestacional , Humanos , Recién Nacido de Bajo Peso , Recién Nacido , Recien Nacido Prematuro , Infertilidad/diagnóstico , Infertilidad/epidemiología , Infertilidad/fisiopatología , Recuperación del Oocito/efectos adversos , Síndrome de Hiperestimulación Ovárica/diagnóstico , Síndrome de Hiperestimulación Ovárica/epidemiología , Síndrome de Hiperestimulación Ovárica/fisiopatología , Inducción de la Ovulación/tendencias , Embarazo , Resultado del Embarazo , Nacimiento Prematuro/epidemiología , Estudios Retrospectivos , Medición de Riesgo , Factores de Riesgo , Mortinato/epidemiología , Factores de Tiempo , Resultado del Tratamiento , Estados Unidos/epidemiología
6.
J Community Health ; 45(3): 615-625, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-31820301

RESUMEN

Quality adolescent sexual and reproductive health (ASRH) services play an important role in supporting the overall health and well-being of adolescents. Improving access to this care can help reduce unintended pregnancies, sexually transmitted diseases (STDs), and human immunodeficiency virus (HIV) infection and their associated consequences, as well as promote health equity. The Centers for Disease Control and Prevention funded three grantees to implement a clinic-based ASRH quality improvement initiative complimented by activities to strengthen systems to refer and link youth to ASRH services. The purpose of this study is to describe the initiative and baseline assessment results of ASRH best practice implementation in participating health centers. The assessment found common use of the following practices: STD/HIV screening, education on abstinence and the use of dual protection, and activities to increase accessibility (e.g., offering after-school hours and walk-in and same-day appointments). The following practices were used less frequently: provider training for Long-Acting Reversible Contraception (LARC) insertion and removal, LARC availability, same-day provision of all contraceptive methods, and consistent sharing of information about confidentiality and minors' rights with adolescent clients. This study describes the types of training and technical assistance being implemented at each health center and discusses implications for future programming.


Asunto(s)
Salud del Adolescente , Accesibilidad a los Servicios de Salud , Servicios de Salud Reproductiva , Salud Reproductiva , Adolescente , Anticoncepción , Femenino , Humanos , Masculino , Embarazo , Embarazo no Planeado , Salud Pública , Mejoramiento de la Calidad , Conducta Sexual , Enfermedades de Transmisión Sexual
7.
Paediatr Perinat Epidemiol ; 31(5): 438-448, 2017 09.
Artículo en Inglés | MEDLINE | ID: mdl-28762537

RESUMEN

BACKGROUND: Affordability plays an important role in the utilisation of in vitro fertilisation (IVF) and non-IVF fertility treatments. Fertility treatments are associated with increased risk of multiple births. The objective of this study was to investigate the association between the affordability of fertility treatments across US states and the percentage of multiple births due to natural conception, non-IVF treatments, and IVF, and the association between these percentages and state-specific multiple birth rates. METHODS: State-specific per capita disposable personal income and state-specific infertility insurance mandates were used as measures of affordability. Maternal age-adjusted percentages of multiple births due to natural conception, non-IVF treatments, and IVF were estimated for each state using birth certificate and IVF data. Scatter plots and regression analysis were used to explore associations between state-level measures of affordability, the percentage of multiple births due to natural conception and fertility treatments, and state-specific multiple birth rates. RESULTS: In 2013, age-adjusted contributions of natural conception, non-IVF fertility treatments, and IVF to multiple births in US were 58.2, 22.8, and 19.0% respectively. States with greater affordability of fertility treatments had higher percentages of multiples due to IVF and lower percentages due to natural conception. Higher percentages of multiples due to IVF and lower percentages due to natural conception were associated with higher state-specific multiple birth rates. CONCLUSION: Increasing affordability of fertility treatments may increase state-specific multiple birth rates. Policies and treatment practices encouraging single-gestation pregnancies may help reduce multiple births resulting from these treatments.


Asunto(s)
Financiación Personal/estadística & datos numéricos , Gastos en Salud/estadística & datos numéricos , Embarazo Múltiple/estadística & datos numéricos , Técnicas Reproductivas Asistidas/economía , Tasa de Natalidad , Femenino , Humanos , Renta , Recién Nacido , Cobertura del Seguro/estadística & datos numéricos , Seguro de Salud/estadística & datos numéricos , Edad Materna , Vigilancia de la Población , Embarazo , Técnicas Reproductivas Asistidas/estadística & datos numéricos , Estados Unidos/epidemiología
8.
Fertil Steril ; 106(7): 1742-1750, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-27666564

RESUMEN

OBJECTIVE: To investigate the associations among underweight body mass index (BMI), pregnancy, and obstetric outcomes among women using assisted reproductive technology (ART). DESIGN: Retrospective cohort study using national data and log binomial regression. SETTING: Not applicable. PATIENT(S): Women undergoing IVF in the United States from 2008 to 2013. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Pregnancy outcomes (intrauterine pregnancy, live birth rates) per transfer, miscarriage rate per pregnancy, and low birth weight and preterm delivery rates among singleton and twin pregnancies. RESULT(S): For all fresh autologous in vitro fertilization (IVF) cycles in the United States from 2008 to 2013 (n = 494,097 cycles, n = 402,742 transfers, n = 180,855 pregnancies) reported to the national ART Surveillance System, compared with normal weight women, underweight women had a statistically significant decreased chance of intrauterine pregnancy (adjusted risk ratio [aRR] 0.97; 95% confidence interval [CI], 0.96-0.99) and live birth (aRR 0.95; 95% CI, 0.93-0.98) per transfer. Obese women also had a statistically decreased likelihood of both (aRR 0.94; 95% CI, 0.94-0.95; aRR 0.87; 95% CI, 0.86-0.88, respectively). Among cycles resulting in singleton pregnancy, both underweight and obese statuses were associated with increased risk of low birth weight (aRR 1.39; 95% CI, 1.25-1.54, aRR 1.26; 95% CI, 1.20-1.33, respectively) and preterm delivery (aRR 1.12; 95% CI, 1.01-1.23, aRR 1.42; 95% CI, 1.36-1.48, respectively). The association between underweight status and miscarriage was not statistically significant (aRR 1.04; 95% CI, 0.98-1.11). In contrast, obesity was associated with a statistically significantly increased miscarriage risk (aRR 1.23; 95% CI, 1.20-1.26). CONCLUSION(S): Among women undergoing IVF, prepregnancy BMI affects pregnancy and obstetric outcomes. Underweight status may have a limited impact on pregnancy and live-birth rates, but it is associated with increased preterm and low-birth-weight delivery risk. Obesity negatively impacts all ART and obstetric outcomes investigated.


Asunto(s)
Índice de Masa Corporal , Fertilización In Vitro , Infertilidad/terapia , Obesidad/complicaciones , Delgadez/complicaciones , Aborto Espontáneo/etiología , Adulto , Peso al Nacer , Bases de Datos Factuales , Femenino , Fertilidad , Fertilización In Vitro/efectos adversos , Edad Gestacional , Humanos , Recién Nacido de Bajo Peso , Infertilidad/diagnóstico , Infertilidad/fisiopatología , Nacimiento Vivo , Obesidad/diagnóstico , Obesidad/fisiopatología , Oportunidad Relativa , Embarazo , Índice de Embarazo , Embarazo Gemelar , Nacimiento Prematuro/etiología , Estudios Retrospectivos , Factores de Riesgo , Delgadez/diagnóstico , Delgadez/fisiopatología , Factores de Tiempo , Resultado del Tratamiento , Estados Unidos
9.
Fertil Steril ; 103(4): 954-61, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25637480

RESUMEN

OBJECTIVE: To evaluate assisted reproductive technology (ART) ET practices in the United States and assess the impact of these practices on multiple births, which pose health risks for both mothers and infants. DESIGN: Retrospective cohort analysis using the National ART Surveillance System data. SETTING: US fertility centers reporting to the National ART Surveillance System. PATIENT(S): Noncanceled ART cycles conducted in the United States in 2012. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Multiple birth (birth of two or more infants, at least one of whom was live-born). RESULT(S): Of 134,381 ART transfer cycles performed in 2012, 51,262 resulted in live births, of which 13,563 (26.5%) were multiple births: 13,123 twin and 440 triplet and higher order births. Almost half (46.1%) of these multiple births resulted from the following four cycle types: two fresh blastocyst transfers among favorable or average prognosis patients less than 35 years (1,931 and 1,341 multiple births, respectively), two fresh blastocyst transfers among donor-oocyte recipients (1,532 multiple births), and two frozen/thawed ETs among patients less than 35 years (1,452 multiple births). More than half of triplet or higher order births resulted from the transfer of two embryos (52.5% of births among fresh autologous transfers, 67.2% of births among donor-oocyte recipient transfers, and 42.9% among frozen/thawed autologous transfers). CONCLUSION(S): A substantial reduction of ART-related multiple (both twin and triplet or higher order) births in the United States could be achieved by single blastocyst transfers among favorable and average prognosis patients less than 35 years of age and donor-oocyte recipients.


Asunto(s)
Transferencia de Embrión/métodos , Progenie de Nacimiento Múltiple , Pautas de la Práctica en Medicina , Embarazo Múltiple , Medicina Preventiva/métodos , Técnicas Reproductivas Asistidas , Adulto , Transferencia de Embrión/normas , Transferencia de Embrión/estadística & datos numéricos , Femenino , Humanos , Recién Nacido , Progenie de Nacimiento Múltiple/estadística & datos numéricos , Vigilancia de la Población , Embarazo , Resultado del Embarazo , Embarazo Múltiple/estadística & datos numéricos , Técnicas Reproductivas Asistidas/normas , Técnicas Reproductivas Asistidas/estadística & datos numéricos , Estudios Retrospectivos , Transferencia de un Solo Embrión/estadística & datos numéricos
11.
Reprod Biomed Online ; 29(3): 299-304, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25043892

RESUMEN

Implantation and live birth rates resulting from IVF cycles using gonadotropin-releasing hormone (GnRH) agonist and (GnRH) antagonist IVF protocols were compared among good-prognosis patients using the Centers for Disease Control and Prevention's National Assisted Reproductive Technology Surveillance System 2009-2010 data (n = 203,302 fresh, autologous cycles). Bivariable and multivariable analyses were conducted between cycles to compare outcomes. Cycles were restricted as follows: age younger than 35 years, maximum FSH less than 10 mIU/mL, first assisted reproduction technology cycle and FSH dose less than 3601 IU. A subgroup analysis including only elective single embryo transfer was also carried out. Among good-prognosis patients, the GnRH-agonist protocol was associated with a lower risk of cancellation before retrieval (4.3 versus 5.2%; P < 0.05) or transfer (5.5 versus 6.8%; P < 0.05), and a higher live birth rate per transfer (adjusted odds ratio [OR] 1.13, confidence interval [CI] 1.03 to 1.25) than the GnRH-antagonist group. Among the elective single embryo transfer group, the GnRH-agonist protocol was associated with a higher implantation rate (adjusted odds ratio [OR] 1.36, CI 1.08 to 1.73) and a higher live birth rate (adjusted OR 1.33, CI 1.07 to 1.66) compared with the GnRH-antagonist protocol. The GnRH-antagonist group had lower rates of ovarian hyperstimulation syndrome. Among good-prognosis patients, agonist protocols decreased cancellation risk and increased odds of implantation and live birth. Antagonist protocols may confer decreased risk of hyperstimulation.


Asunto(s)
Fertilización In Vitro/métodos , Hormona Liberadora de Gonadotropina/agonistas , Hormona Liberadora de Gonadotropina/antagonistas & inhibidores , Inducción de la Ovulación/métodos , Adulto , Implantación del Embrión , Transferencia de Embrión , Femenino , Antagonistas de Hormonas/uso terapéutico , Humanos , Embarazo , Índice de Embarazo , Pronóstico , Estados Unidos
13.
Obstet Gynecol ; 123(2 Pt 1): 239-247, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24402601

RESUMEN

OBJECTIVE: To assess the association between number of embryos transferred and a measure of assisted reproductive technology success that emphasizes good perinatal outcome. METHODS: We analyzed assisted reproductive technology cycles initiated in 2011 that progressed to fresh embryo transfer among women using autologous oocytes and reported to the U.S. National Assisted Reproductive Technology Surveillance System (n=82,508). Percentages of good perinatal outcome (live birth of a term [at or after 37 weeks of gestation], normal birth weight [2,500 g or greater] singleton) were stratified by prognosis (favorable, average, less favorable), age, embryo stage (day 3, day 5), and number of embryos transferred. Differences in the percentages by number of embryos transferred were evaluated using Fisher's exact test with Bonferroni correction. RESULTS: Among patients younger than 35 years with a favorable prognosis, chances of a good perinatal outcome were higher with transferring a single (compared with double) day 5 (43% compared with 27%) or day 3 embryo (36% compared with 30%). Likewise, a higher chance of a good perinatal outcome was observed with transferring a single day 5 embryo in patients 35-37 years old with a favorable prognosis (39% compared with 28%) or patients younger than 35 years old with an average prognosis (35% compared with 26%). A higher chance of good perinatal outcome was associated with transferring two (compared with one) day 3 embryos among patients aged 40 years or younger with an average prognosis or patients younger than 35 years old with a less favorable prognosis. CONCLUSION: The association between number of embryos transferred and the birth of a term, normal birth weight singleton is described. Among patients younger than 35 years of age undergoing in vitro fertilization with a favorable prognosis, the highest chance of good perinatal outcome is associated with a single embryo transfer. LEVEL OF EVIDENCE: II.


Asunto(s)
Transferencia de Embrión/métodos , Resultado del Embarazo , Adulto , Peso al Nacer , Femenino , Fertilización In Vitro , Edad Gestacional , Humanos , Recién Nacido de Bajo Peso , Nacimiento Vivo , Edad Materna , Embarazo , Embarazo Múltiple , Nacimiento Prematuro , Pronóstico , Transferencia de un Solo Embrión
14.
N Engl J Med ; 369(23): 2218-25, 2013 Dec 05.
Artículo en Inglés | MEDLINE | ID: mdl-24304051

RESUMEN

BACKGROUND: The advent of fertility treatments has led to an increase in the rate of multiple births in the United States. However, the trends in and magnitude of the contribution of fertility treatments to the increase are uncertain. METHODS: We derived the rates of multiple births after natural conception from data on distributions of all births from 1962 through 1966 (before fertility treatments were available). Publicly available data on births from 1971 through 2011 were used to determine national multiple birth rates, and data on in vitro fertilization (IVF) from 1997 through 2011 were used to estimate the annual proportion of multiple births that were attributable to IVF and to non-IVF fertility treatments, after adjustment for maternal age. Trends in multiple births were examined starting from 1998, the year when clinical practice guidelines for IVF were developed with an aim toward reducing the incidence of multiple births. RESULTS: We estimated that by 2011, a total of 36% of twin births and 77% of triplet and higher-order births resulted from conception assisted by fertility treatments. The observed incidence of twin births increased by a factor of 1.9 from 1971 to 2009. The incidence of triplet and higher-order births increased by a factor of 6.7 from 1971 to 1998 and decreased by 29% from 1998 to 2011. This decrease coincided with a 70% reduction in the transfer of three or more embryos during IVF (P<0.001) and a 33% decrease in the proportion of triplet and higher-order births attributable to IVF (P<0.001). CONCLUSIONS: Over the past four decades, the increased use of fertility treatments in the United States has been associated with a substantial rise in the rate of multiple births. The rate of triplet and higher-order births has declined over the past decade in the context of a reduction in the transfer of three or more embryos during IVF. (Funded by the Centers for Disease Control and Prevention.).


Asunto(s)
Progenie de Nacimiento Múltiple/estadística & datos numéricos , Técnicas Reproductivas Asistidas , Adulto , Transferencia de Embrión/tendencias , Femenino , Fertilización In Vitro , Humanos , Edad Materna , Embarazo , Técnicas Reproductivas Asistidas/tendencias , Estados Unidos
15.
JAMA ; 310(22): 2426-34, 2013 Dec 11.
Artículo en Inglés | MEDLINE | ID: mdl-24135860

RESUMEN

IMPORTANCE: The prevalence of oocyte donation for in vitro fertilization (IVF) has increased in the United States, but little information is available regarding maternal or infant outcomes to improve counseling and clinical decision making. OBJECTIVES: To quantify trends in donor oocyte cycles in the United States and to determine predictors of a good perinatal outcome among IVF cycles using fresh (noncryopreserved) embryos derived from donor oocytes. DESIGN, SETTING, AND PARTICIPANTS: Analysis of data from the Centers for Disease Control and Prevention's National ART Surveillance System, to which fertility centers are mandated to report and which includes data on more than 95% of all IVF cycles performed in the United States. Data from 2000 to 2010 described trends. Data from 2010 determined predictors. MAIN OUTCOMES AND MEASURES: Good perinatal outcome, defined as a singleton live-born infant delivered at 37 weeks or later and weighing 2500 g or more. RESULTS: From 2000 to 2010, data from 443 clinics (93% of all US fertility centers) were included. The annual number of donor oocyte cycles significantly increased, from 10,801 to 18,306. Among all donor oocyte cycles, an increasing trend was observed from 2000 to 2010 in the proportion of cycles using frozen (vs fresh) embryos (26.7% [95% CI, 25.8%-27.5%] to 40.3% [95% CI, 39.6%-41.1%]) and elective single-embryo transfers (vs transfer of multiple embryos) (0.8% [95% CI, 0.7%-1.0%] to 14.5% [95% CI, 14.0%-15.1%]). Good perinatal outcomes increased from 18.5% (95% CI, 17.7%-19.3%) to 24.4% (95% CI, 23.8%-25.1%) (P < .001 for all listed trends). Mean donor and recipient ages remained stable at 28 (SD, 2.8) years and 41 (SD, 5.3) years, respectively. In 2010, 396 clinics contributed data. For donor oocyte cycles using fresh embryos (n = 9865), 27.5% (95% CI, 26.6%-28.4%) resulted in good perinatal outcome. Transfer of an embryo at day 5 (adjusted odds ratio [OR], 1.17 [95% CI, 1.04-1.32]) and elective single-embryo transfers (adjusted OR, 2.32 [95% CI, 1.92-2.80]) were positively associated with good perinatal outcome; tubal (adjusted OR, 0.72 [95% CI, 0.60-0.86]) or uterine (adjusted OR, 0.74 [95% CI, 0.58-0.94]) factor infertility and non-Hispanic black recipient race/ethnicity (adjusted OR, 0.48 [95% CI, 0.35-0.67]) were associated with decreased odds of good outcome. Recipient age was not associated with likelihood of good perinatal outcome. CONCLUSIONS AND RELEVANCE: In the United States from 2000 to 2010, there was an increase in number of donor oocyte cycles, accompanied by an increase in good outcomes. Further studies are needed to understand the mechanisms underlying the factors associated with less successful outcomes.


Asunto(s)
Fertilización In Vitro/estadística & datos numéricos , Donación de Oocito/estadística & datos numéricos , Transferencia de un Solo Embrión/estadística & datos numéricos , Adulto , Peso al Nacer , Consejo , Toma de Decisiones , Femenino , Humanos , Recién Nacido , Persona de Mediana Edad , Donación de Oocito/tendencias , Embarazo , Resultado del Embarazo , Estudios Retrospectivos , Estados Unidos
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