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Results for “Birth Rate--statistics”

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At least 19 recordsLinked to original sources
PubMed1977

Seasonal incidence of some congenital malformations in the central nervous system in Sweden, 1965-1972.

Seasonal trends of some congenital CNS malformations in infants born in Sweden during the years 1965 to 1972 were investigated. The study is based on reports to the Swedish Register of Congenital Malformations, statistics from the National Board of Health, and records from Malmö General Hospital and the Hospital of Lund. The malformations analysed in this study are anencephaly, spina bifida aperta (with or without hydrocephalus) and isolated hydrocephalus. Variations in incidence of months of birth and last menstrual period (LMP) were tested statistically in three different ways: standard X2-test for heterogeneity between recorded numbers of infants each calender month, Edwards' method, and a squared sinus function, all with or without correction for variations in general monthly birth rates. Statistical significant seasonal variations were found for anencephaly with an LMP maximum in March and for spina bifida aperta with a maximum in July. Factors which can explain such seasonality are briefly discussed.

Analysis of Variance↗
PubMed1977

Seasonal incidence of cleft lips and cleft palates in Sweden, 1965--1974.

Seasonal trends of infants with cleft lips and palates born in Sweden during a ten-year period were investigated. The study is based on reports to the Swedish Register of Congenital Malformations supplemented with hospital data. Three different statistical methods were used: chi2 for heterogeneity between months, Edwards' method, and a squared sinus function technique. The tests were performed on birth date and date of last menstrual period (LMP) with and without correction for fluctuation in monthly birth rate. Statistical significant seasonality was found both for cleft lips with or without cleft palate (CLP) and for isolated cleft palate (CP) but only for LMP data. For CLP. a peak was found in March and for CP, in April.

Cleft Lip↗
PubMedDate not supplied

Prenatal participation in WIC related to Medicaid costs for Missouri newborns: 1982 update.

This study replicates a 1980 evaluation of WIC prenatal participation in Missouri by using a file of 9,086 Missouri Medicaid records matched with the corresponding birth records. This file was divided into a WIC group containing 3,261 records and a non-WIC group of 5,825 records. The 1982 results generally confirm the 1980 results, with the 1982 findings showing slightly improved pregnancy outcomes for WIC participants and slightly reduced benefit-to-cost ratios compared with the 1980 findings. In 1982, WIC participation was found to be associated with an increase in mean birth weight of 31 grams and reductions in low birth weight rates (statistically significant) and in neonatal death rates (not statistically significant). The reduction in each rate was 23 percent. WIC participation was also associated with a reduction in Medicaid costs for newborns reported within 45 days of birth amounting to $76 per participant. For every dollar spent on WIC, about 49 cents in Medicaid costs were apparently saved. However, wide 95 percent confidence intervals ($.07, $.90) make it difficult to determine precisely what impact WIC has on Federal and State budget outlays.

Birth Weight↗
PubMed1991

Fertility rates in 238 HIV-1-seropositive women in Zaire followed for 3 years post-partum.

Birth-control use and fertility rates were prospectively determined in 238 HIV-1-seropositive and 315 HIV-1-seronegative women in Kinshasa, Zaire, during the 36-month period following the delivery of their last live-born child. No women delivered children during the first follow-up year. Birth-control utilization rates (percentage use during total observation time) and fertility rates (annual number of live births per 1000 women of child-bearing age) in the second year of follow-up were 19% (107.4 per 1000) for HIV-1-seropositive women and 16% (144.7 per 1000) for HIV-1-seronegative women. In the third year of follow-up these rates were 26 (271.0 per 1000) and 16% (38.6 per 1000) for HIV-1-seropositive and HIV-1-seronegative women, respectively (P less than 0.05 for the difference in birth-control utilization and fertility rates between seropositive and seronegative women in the third year of follow-up). Seven (2.9%) of the 238 HIV-1-seropositive women initially included in the study brought their sex partners in for HIV-1 testing; three (43%) of these men were found to be HIV-1-seropositive. New HIV-1 infection did not have a dramatic effect on the fertility of seropositive women. The nearly uniform unwillingness of HIV-1-seropositive women to inform husbands or sexual partners of their HIV-1 serostatus accounted in large part for the disappointingly high fertility rates in seropositive women who had been provided with a comprehensive program of HIV counseling and birth control. Counseling services for seropositive women of child-bearing age which do not also include these women's sexual partners are unlikely to have an important impact on their high fertility rates.

AIDS-Related Complex↗
PubMed1989

The Greek National Perinatal Survey. II: Socioeconomic factors and perinatal mortality in Greece.

Information concerning all 10,859 singleton deliveries in Greece in April 1983, were analysed to assess the contribution of socioeconomic factors to the perinatal mortality rate. Statistically significant associations were initially found with parental education, parental ages, duration of marriage, paternal occupation and parity. There was no association with maternal smoking habit, maternal occupation during pregnancy, type of health insurance or housing conditions. Once logistic regression analyses had taken account of the strong parity effect (P less than 0.0001), only a moderate association with maternal age (P less than 0.05) remained statistically significant, together with a marginally significant (P less than 0.05) association with maternal education level. Mothers who were moderately well educated had the lowest risk of loosing their baby. It is concluded that traditional measures of social deprivation appeared to have little effect on perinatal mortality in Greece in 1983.

Birth Rate↗
PubMed1975

Fertility rates and abortion rates: simulations of family limitation.

A computerized model that simulates reproductive events during the childbearing years of a cohort of women is used to analyze the impact of contraception and induced abortion on fertility. Four different reproductive regimens are investigated: (2) contraception only, (2) abortion only, (3) abortion as a backstop to contraception, and (4) combinations of abortion and contraception. It is concluded that in historical as well as in modern populations, levels of fertility near replacement are unlikely to be obtained without the use of induced abortion.

Abortion, Induced↗