Abstract：
:No studies show that IUDs destroy developing embryos at rates higher than those found in women who are not using contraceptives. Studies of early pregnancy factors have not shown statistically significant differences in transient levels of hCG between IUD and control groups, a sign of early abortion. The small, careful study by Segal et al. (1985) found no transient rise of hCG in the IUD group. The highly sensitive assay in a larger sample of IUD users, by Wilcox et al. (1985), suggests that an upper limit of only 3 or 4 percent of ovulatory matings with an IUD in situ might show transient rises of hCG. The electron microscopy of Hurst et al. (1980) demonstrated the existence of leukocyte-ridden degenerating embryos in rhesus monkeys fitted with IUDs, but found the same percentage of degenerating embryos in the control group. In this respect, IUDs do no more than nature. The work of Hurst et al. also demonstrates the comparative rarity of fertilized ova in rhesus monkeys fitted with IUDs. Croxatto (1974) and Alvarez et al. (1988) showed that this was also true for humans. A variety of studies demonstrate that IUD use diminishes both the number of sperm reaching the oviduct and their capacity to fertilize ova. Depending on the type of IUD and the drug dose, sperm are hindered from penetrating cervical mucus, are phagocytized by leukocytes, are incapacitated, with head-tail separation in the presence of copper, and suffer other cytotoxic effects in the IUD-altered uterine fluid. In the oviducts of copper-IUD users, ova are found significantly less frequently than in controls.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Stud Fam Plannjournal_title
Studies in family planningauthors
Sivin Isubject
Has Abstractpub_date
1989-11-01 00:00:00pages
355-9issue
6 Pt 1eissn
0039-3665issn
1728-4465journal_volume
20pub_type
杂志文章abstract：:In 1973, the Philippine population program was reorganized, and new strategies for motivating clients and training personnel were developed. The Woman and Child Labor Law was amended to limit maternity leave benefits, promote family planning services, and remove discrimination against married female employees. The B...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1974-05-01 00:00:00
abstract：:The faculty of Medicine of Mahidol University in Bangkok organized a community health program for medical students composed of 5 courses: health and demographic survey; analysis of community health programs; planning of community health care; clerkship in community health and internships in community health. These c...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1974-04-01 00:00:00
abstract：:This article presents results from the 1997 Jordan Population and Family Health Survey (JPFHS) that was conducted by the Department of Statistics, Amman, Jordan, within the framework of the Demographic and Health Survey Program of Macro International. The data for the nationally representative JPFHS were collected fr...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：10.1111/j.1728-4465.2000.00081.x
更新日期：2000-03-01 00:00:00
abstract：:A review of surveys from Ghana, Kenya, Cameroon, Jamaica, and Senegal suggests that the requirement that women seeking hormonal contraception and IUDs should present for family planning services when menstruating represents a significant but unrecognized barrier to contraceptive access. Non-menstruating clients are i...
journal_title：Studies in family planning
pub_type： 杂志文章,评审
doi：
更新日期：1997-09-01 00:00:00
abstract：:This study compares family size preferences, ideal sex compositions, and the motivation underlying these preferences between currently married women and their husbands in a transitional rural society in India. Reasons for having children, though similar, differ in some important respects: women's family size preferenc...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1989-09-01 00:00:00
abstract：:The world has reached the present position of unprecedentedly rapid population growth not by achieving uniquely high fertility but by bringing about extraordinarily low mortality. The high growth rate and the built-in momentum of the age structure are obstacles to achievement of an acceptable standard of living for mo...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1975-12-01 00:00:00
abstract：:The availability of legal abortion in California appeared to affect California fertility in 1971 with a downward trend in both legitimate and illegitimate births. In 1972 legitimate birth rates continued to fall as rapidly as in 1971 but illegitimacy rates declined less rapidly. Unmarried women continued to be the d...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1973-11-01 00:00:00
abstract：:A research study was conducted to determine the economic roles of rural women in Java, Indonesia, who work outside the agricultural sector. The study was designed to create a system of job classification for small trade and industry which would distinguish among women's economic activities. The research consisted of...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1979-11-01 00:00:00
abstract：:The ever-increasing prevalence of negative shocks experienced by poor, vulnerable households often induces extreme measures as ways to recover from the negative effects on income. Child marriage is one of the coping mechanisms households may use. This study examines whether young people in households that experience a...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：10.1111/sifp.12099
更新日期：2019-09-01 00:00:00
abstract：:In this study, age- and parity-specific birth data were used to estimate maternal mortality rates for 1982-83 at University Teaching Hospital in Lusaka, Zambia. Overall, 60 maternal deaths occurred during pregnancy or within 42 days after pregnancy termination, and four pregnancy-related deaths occurred more than 42 d...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1986-09-01 00:00:00
abstract：:The length of the interval from last live birth to the subsequent pregnancy was studied for 121 contraceptive pill acceptors who were in postpartum amenorrhea at the time of acceptance and 121 matched nonacceptors in a prospective study in Matlab, Bangladesh. Half of the pill acceptors discontinued use within seven mo...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1982-06-01 00:00:00
abstract：:In 2003, Nigeria adopted the Family Life and HIV Education (FLHE) sexuality education curriculum. Our analysis interrogates variation in sub-national implementation. We conducted 52 interviews with persons knowledgeable about the curriculum in three states-Kano, Lagos, and Niger-and reviewed publications on FLHE. In K...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：10.1111/sifp.12043
更新日期：2017-12-01 00:00:00
abstract：:By 1988, 71% of the 206 million married Chinese women of reproductive age were using a modern method of contraception. About 60 million women were using IUDs (41%), and 38% relied on tubal ligation, the main methods promoted by the national family planning (FP) program. During several trips to China between May 1990...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1993-05-01 00:00:00
abstract：:The effect of magazine advertising on vasectomy acceptance was tested in São Paulo, Brazil. Four advertisements ran for ten weeks in eight magazines. Clinic performance doubled during the campaign and stabilized at 54 percent higher than baseline. The advertisements selectively attracted the target audience without br...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1989-03-01 00:00:00
abstract：:Discusses the rationale behind national scale programs to support breastfeeding; assesses the elements needed for successful supply and demand interventions; and examines the national strategies of Jamaica, Papua New Guinea, and Nicaragua, where breastfeeding programs appear likely to succeed. Governments can promote...
journal_title：Studies in family planning
pub_type： 杂志文章,评审
doi：
更新日期：1981-04-01 00:00:00
abstract：:In a collaborative study, conducted by American and Indonesian researchers, on the attitudes of married, middle class Indonesian women toward themselves and toward their families, special efforts were made to carefully recruit, intensively train, and selectively match interviewers to respondents on a number of charact...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1979-11-01 00:00:00
abstract：:There are a variety of ways to conceptualize and measure accessibility to contraceptive services and supplies. Using detailed data for rural Thailand, a multiplicity of reasonable measures are developed that reflect time and/or distance to various government program outlets. Many of these are only moderately correlate...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1984-09-01 00:00:00
abstract：:In the wake of the 1994 International Conference on Population and Development in Cairo, considerable activity has occurred both in national policymaking for reproductive health and in research on the implementation of the Cairo Program of Action. This report considers how effectively a key component of the Cairo agen...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：10.1111/j.1728-4465.2000.00151.x
更新日期：2000-06-01 00:00:00
abstract：:An empirical study of the family planning program and its clients in the rural areas of Allahabad Division of Uttar Pradesh in India was undertaken in 1971-1972. While family planning acceptance in this region is low, interviews with villagers and family planning staff suggest that organizational shortcomings of the p...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1976-03-01 00:00:00
abstract：:The aim of this study was to gather comprehensive data from three hospitals in Istanbul, Turkey, in order to gain in-depth understanding of the quality of antenatal care in this setting. The Bruce-Jain framework for quality of care was adapted for use in evaluating antenatal care. Methods included examination of hospi...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：10.1111/j.1728-4465.2006.00083.x
更新日期：2006-03-01 00:00:00
abstract：:Family planning progress in Singapore during 1972 is reviewed. The Singapore Family Planning and Population Board launched its most intensive family planning campaign in July 1972. A primary objective of the campaign was to promote both male and female sterilizations. Stronger social disincentives to discourage lar...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1973-05-01 00:00:00
abstract：:Population-based, cross-sectional data from 3587 ever-married Ukrainian women aged 17-44 are used to examine the association between physical violence perpetrated by a sexual partner (defined as kicking, hitting, slapping, pushing, or attacking with a weapon) and sexual health knowledge, sexual behavior, and the likel...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：10.1111/j.1728-4465.2007.00120.x
更新日期：2007-06-01 00:00:00
abstract：:The relationship between symptoms reported during the first two cycles of oral contraceptive use and subsequent discontinuation was studied using data from a comparative clinical trial of two oral contraceptives (standard dose and low dose) in Sri Lanka. Among 24 symptoms considered, the most commonly reported were he...
journal_title：Studies in family planning
pub_type： 临床试验,杂志文章
doi：
更新日期：1984-11-01 00:00:00
abstract：:Within developing countries, our understanding of reproductive inequality-how fertility is distributed within a population-has been shaped largely by studies of fertility differentials, a practical but partial-information measure. In this study, we examine whether exclusive reliance on differentials biases this unders...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：10.1111/j.1728-4465.2008.166.x
更新日期：2008-09-01 00:00:00
abstract：:This report presents results from a comparison of subsidized commercial contraceptive marketing programs in 11 developing countries, and makes recommendations for program planning based on findings. The analysis, based on a combined quantitative approach of analysis of variance, factor analysis, and regression analysi...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1985-01-01 00:00:00
abstract：:The effect of the time of introduction of supplements on the duration of lactation, lactational amenorrhea, and interpregnancy interval is investigated in 428 women belonging to an urban low income group in Hyderabad, India. The mean duration for which the infants were solely breastfed was 8.9 months; the durations o...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1982-10-01 00:00:00
abstract：:Using IN and IS scales that measure underlying family size and sex preferences, respectively, it is found that a majority of married women in a Bangladesh survey have preferences for very large families and for sons. While differences in underlying size preferences are related to age, age at 1st cohabitation, educati...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1981-03-01 00:00:00
abstract：:Research has indicated that gender dynamics-and in particular men's disapproval of family planning-have had an influence on the low levels of contraceptive use in sub-Saharan Africa. Limited evidence exists, however, on effective strategies to increase male approval. We conducted 12 focus group discussions with marrie...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：10.1111/j.1728-4465.2015.00024.x
更新日期：2015-06-01 00:00:00
abstract：:Among the countries of South Asia, Sri Lanka, with a birth rate of 26 per 1,000, has achieved by far the lowest fertility level. The research reported here shows that at least half of all fertility control there is still practiced by means other than those offered by the national family planning program. This paper re...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：
更新日期：1987-01-01 00:00:00
abstract：:Using data from a panel survey of a representative probability sample of Russian households, we examine how individual traits, locality, and "sex-event context" are associated with condom use in contemporary Russia. At the individual level, age has negative effects and measures of risk orientation have positive effect...
journal_title：Studies in family planning
pub_type： 杂志文章
doi：10.1111/j.1728-4465.2008.00147.x
更新日期：2008-03-01 00:00:00
