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Teen Birth Rates Decline
Published 2012-08-01“…According to the nonprofit research organization Child Trends, the teenage birth rate for 15-19 year olds is at the lowest point in over 40 years. …”
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Teen Birth Rates Decline
Published 2012-08-01“…According to the nonprofit research organization Child Trends, the teenage birth rate for 15-19 year olds is at the lowest point in over 40 years. …”
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Crime and birth rate in Ukraine: modelling and statistical analysis
Published 2024-06-01Subjects: Get full text
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Spatio-temporal modelling of extreme low birth rates in U.S. counties
Published 2025-02-01Subjects: “…Low birth rate…”
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Birth Rate Effects on an Age-Structured Predator-Prey Model with Cannibalism in the Prey
Published 2015-01-01“…It consists of systems of m ordinary differential equations, where m is a parameter associated with new proposed prey birth rates. We discuss how these new birth rates give the required flexibility to produce differential systems with well-behaved solutions. …”
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Permanence for a Delayed Nonautonomous SIR Epidemic Model with Density-Dependent Birth Rate
Published 2011-01-01“…Based on some well-known SIR models, a revised nonautonomous SIR epidemic model with distributed delay and density-dependent birth rate was considered. Applying some classical analysis techniques for ordinary differential equations and the method proposed by Wang (2002), the threshold value for the permanence and extinction of the model was obtained.…”
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Reduction of nutrients concentration in culture medium has no effect on bovine embryo production, pregnancy and birth rates
Published 2025-02-01Subjects: Get full text
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The Regional Centralization of Electronic Fetal Heart Rate Monitoring and Its Impact on Neonatal Acidemia and the Cesarean Birth Rate
Published 2016-01-01“…Although there was no difference in the incidence of nonreassuring FHR patterns in the noncompliant group, the total cesarean birth rate was significantly higher than that in the compliant group. …”
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Comparison of live birth rate and fetal outcomes between fresh embryo and frozen-thawed embryo transfers: a prospective study
Published 2025-02-01“…Similarly, there were no significant differences in live birth rate (AOR = 1.6; 95% CI: 0.54–12.4), preterm birth (AOR = 0.62; 95% CI: 0.33–5.5), and primary infertility (AOR = 0.73; 95% CI: 0.34–1.6) between fresh and frozen ETs. …”
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Maternal age-related declines in live birth rate following single euploid embryo transfer: a retrospective cohort study
Published 2025-02-01Subjects: Get full text
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Fear of childbirth and psychiatric disorders decrease the likelihood of subsequent births: a retrospective register-based cohort study
Published 2025-01-01Subjects: Get full text
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How to estimate the probability of a live birth after one or more complete IVF cycles? the development of a novel model in a single-center
Published 2025-01-01Subjects: Get full text
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Assessment of the growing demographic threats to economic security in the regions of the North Caucasian Federal District
Published 2023-02-01Subjects: Get full text
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Fertility dynamics in Russia: assessment and forecast
Published 2022-09-01Subjects: “…birth rate…”
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