PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Fertility Control, Postconception”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 199 records · Page 11Linked to original sources
PubMed1988

Induction of abortion by PGF2 alpha in the second trimester of pregnancy.

The Authors evaluate the efficacy of the intravenous infusion of PGF2 alpha in the induction of abortion in the second trimester of pregnancy with live fetus (Italian Law no. 194/1978). Abortion occurred in 3 out of 11 (27.27%) nulliparous patients, and uterine curettage was necessary in 2 cases. The interval between administration of the drug and the beginning of uterine contractions was 31.42 +/- 14.15 minutes (range 10 to 35 minutes), the duration of infusion was 7.55 +/- 3.64 hours (range 7 to 9.15 hours), the interval between initiation of infusion and delivery was 8.10 +/- 2.60 hours (range 7 to 9.45 hours), and the dose administered was 20.23 +/- 3.75 mg (range 15 to 25 mg). Side effects were reported in 10 cases (90.90%), and in 5 cases these effects were caused by interruption of infusion. Abortion occurred in 7 out of 13 pluriparous patients (53.84%), and uterine curettage was necessary in 4 cases. The interval between administration of the drug and the beginning of uterine contractions was 20 +/- 12.24 minutes (range 20 to 45 minutes), the duration of infusion was 8.26 +/- 0.9 hours (range 3.10 to 16 hours), the interval between initiation of infusion and delivery was 8.40 +/- 0.8 hours (range 3.0 to 9.6 hours), and the dose administered was 19.28 +/- 5.34 mg (range 5 to 25 mg). Side effects were reported in 11 cases (84.61%), and in 6 cases these effects were caused by interruption of infusion.(ABSTRACT TRUNCATED AT 250 WORDS)

Abortion, Therapeutic↗
PubMedDate not supplied

Contraceptive use and fertility in Paraguay, 1987.

In 1987, 38 percent of married Paraguayan women aged 15-44 were practicing contraception, with oral contraceptives being the most prevalent method. Fertility rates for the population were at corresponding levels, with an overall fertility rate of 5.4 births per woman. Fertility has not changed substantially for the nation as a whole since 1979, and contraceptive use has increased by only 6 percentage points. Findings from the present study are consistent with the lack of a public sector family planning program in the country. Pharmacies are the principal source of contraceptives in the country. Twenty-two percent of all women and one-third of married women are at risk of having an unplanned pregnancy. The greatest impact on contraceptive use can be made if new and continued program efforts focus n the interior of the Oriental region of the country.

Adolescent↗
PubMed1988

Risk factors for breast cancer in Chinese women in Shanghai.

Five hundred thirty-four histologically confirmed incident cases of breast cancer in Chinese women of Shanghai and an equal number of age and sex-matched population controls were interviewed as part of an epidemiological study of breast cancer risk factors. Early age at menarche was positively associated with breast cancer risk whereas early age at first full term pregnancy, high parity, and long duration of nursing were each negatively associated. We found high average body weight to be a risk factor, especially among women over age 60. Use of oral contraceptives after age 45 also was a risk factor, but use in general was not. Personal history of benign breast disease and history of breast cancer in first degree female relatives both increased risk. Multivariate analysis showed that each of these risk (or protective) factors was independently related to breast cancer. In addition to confirming most of the breast cancer risk factors of Western populations in a low risk developing Asian country, this study demonstrates a clear beneficial effect on breast cancer risk of lactation in a population characterized by a long cumulative duration of nursing in the majority of women. Finally, this study supports several other recent reports of a residual and beneficial effect of parity on breast cancer risk after controlling for age at first full term pregnancy.

Abortion, Spontaneous↗
PubMedDate not supplied

Intermediate determinants of racial differences in 1980 U.S. nonmarital fertility rates.

There are four major determinants of racial differences in nonmarital fertility rates in the U.S.: differential sexual activity (exposure to risk); differential in spontaneous and induced abortion; differential contraceptive use (including method efficacy); and differential legitimation, through marriage, of births conceived out of wedlock. Racial differences in all four indicators encourage higher black than white nonmarital fertility rates in every age-group examined; however, the relative contribution of each determinant to differences in nonmarital fertility varies according to age. The gap between whites and blacks in contraceptive use is of greatest concern to policy-makers, because family planning effectiveness can, at least theoretically, be changed by program effort. However, even if black women and white women had equivalent levels of contraceptive use, sexual activity and recourse to abortion, there would still be substantial racial differences in nonmarital fertility rates because of the greater propensity among whites to legitimate premaritally conceived births.

Abortion, Induced↗
PubMedDate not supplied

Characteristics of U.S. women having abortions, 1982-1983.

In 1982 and 1983, as in previous years, the majority of abortions in the United States were obtained by young women (62 percent), white women (70 percent) and unmarried women (81 percent). Half of all abortions were performed eight or fewer weeks after the last menstrual period, and 91 percent, at 12 weeks or earlier. The proportion of abortions that were repeat procedures continued to rise, to 37 percent in 1982 and 39 percent in 1983. The rate of abortion, 29 per 1,000, has remained essentially the same since 1981. Women aged 18-19 continue to have the highest abortion rate of any age-group (60 per 1,000). While most abortions are obtained by white women, the nonwhite abortion rate is more than twice that of whites. Thirty percent of all pregnancies were terminated by abortion in 1983, the same proportion as in 1982 and 1981. The highest abortion ratios are found among unmarried women (63 percent), women 40 and older (51 percent), teenagers (42 percent) and nonwhites (40 percent). Teenage nonwhites and whites have about the same abortion ratios. After rising during the 1970s, the adolescent pregnancy rate peaked around 1980-1981 and fell slightly in 1982-1983. The relative differentials between the pregnancy, birth and abortion rates of nonwhite and white teenagers narrowed somewhat between 1978 and 1981, but then widened slightly between 1981 and 1983.

Abortion, Induced↗
PubMed1987

[Epidemiologic study of carcinoma in situ of the cervix].

During the period from 1950 to 1983, 1633 patients with cervical carcinoma in situ (CIS) were treated at the Cancer Institute Hospital, Tokyo. These cases were retrospectively investigated to determine the relation between the epidemiologic features and social phenomena. The number of patients with CIS tends to increase year by year. The incidence of CIS tends to be larger in the younger age group. Delay in the age of primiparity, a lower incidence of multiparas and a higher incidence of artificial abortion were seen in the CIS patients. Recurrence was seen in 0.4% of the CIS patients, and the recurrence site was most frequently the vaginal stump.

Abortion, Induced↗
PubMedDate not supplied

Proximate determinants of fertility and policy implications in Beijing.

Data from a 1982 sample survey of 3,830 married women below age 50 in a district of Beijing City are applied to the Bongaarts model of the proximate determinants of fertility. A total fertility rate (TFR) of 0.75 births per woman is estimated from the model, compared with a TFR of 1.24 actually observed from the survey. The estimated TFR (0.75) results from the assumed total fecundity (TF) of 15.30 births per woman being inhibited by the indexes of the proximate determinants of fertility, most notably non-marriage (.280), contraception (.315), and induced abortion (.586). The effects of two other proximate determinants, lactational infecundability and spousal separation, were negligible. Comparative data from other countries confirm that the study area has very low levels of fertility and marriage, a very high prevalence of induced abortion, and a small effect of lactational infecundability. The extremely low level of fertility was, thus, achieved through a high level of induced abortion. Future research needs and policy implications associated with the study are discussed.

Abortion, Induced↗