Contraceptive overlap with post-partum anovularity

Abstract Contraceptive use in the early post-partum months is, for the majority of women, without any direct protective value because, whilst not ovulating, they are not exposed to the risk of pregnancy. This does not, of course, imply that contraception should be delayed until signs of the resumption of ovulation appear, as for many women the first sign of such resumption is pregnancy. There are, besides, logistic and psychological reasons which make early post-partum contraception advisable. It does, however, demand that any calculation of the demographic effects of contraceptive use should make due allowance for this null period of use.     

Dynamics of contraceptive use and breastfeeding during the post-partum period in Peru and Indonesia

This paper examines the interaction between contraceptive use and breastfeeding in relation to resumption of intercourse and duration of amenorrhea post-partum. We used data from the month-by-month calendar of reproductive events from Demographic and Health Surveys (DHS) in Peru and Indonesia. The analyses show that breastfeeding women were less likely than non-breastfeeding women to have resumed sexual intercourse in the early months post-partum in both countries. In Peru, but not in Indonesia, breastfeeding women had a significantly lower odds than non-breastfeeding women of adopting contraception. Although the likelihood of contraceptive adoption was highest in the month women resumed menstruation in both countries, about ten per cent of subsequent pregnancies occurred to women before they resumed menses. These results emphasize the importance of integrating breastfeeding counselling and family planning services in programmes serving post-partum women, as a means of enabling those who wish to space their next birth to avoid exposure to the risk of a pregnancy that may precede the return of menses.     

Contraceptive acceptance and pregnancy: a matrix approach to the analysis of competing risks

Abstract This paper represents an initial attempt to formalize the relationships among post-partum sterility, fecundability, and contraceptive acceptance in terms of absorbing Markov chains. Acceptance of contraception offered by family planning programmes is analyzed as a possible event in time for a cohort of recently delivered women as they pass through phases of temporary sterility and fecundability towards another possible pregnancy. The results of the study indicate that once a woman leaves the post-partum anovulatory stage, the probability of her becoming pregnant again is large compared to the competing rates of contraceptive acceptance currently in force. Unless highly fecund non-contracepting women are approached by family planning programmes shortly after a pregnancy has been terminated (by childbirth or abortion), they will quickly become ineligible to accept either the pill or IUD because of once again being 'currently pregnant'.     

Pregnancy outcome and the time required for next conception

Abstract Variations in the time required for next conception by outcome ofthe preceding pregnancy, and the age of woman, are studied for Taiwanese women. Pregnancy interval, defined as the period between the end of one pregnancy and the beginning of the next, is taken as a measure of the time required for the next conception. The averages and variances of pregnancy intervals are estimated from reports of pregnancies occurring in a probability sample of 2,443 married women, aged 20-39, living in Taichung (Taiwan) in 1962. The effects of 'truncation bias' and 'memory bias' on the two moments of pregnancy intervals are estimated indirectly by cross-classifying women according to their ages at interview and their ages at the beginning (or end) of each pregnancy interval. The moments of post-partum amenorrhoea are, then, estimated indirectly from the moments of pregnancy intervals. The effects of truncation bias and memory bias are compensatory in this sample. In the absence of contraception, women, on an average, took longer to conceive following a live birth than following a foetal death. The time taken for next conception increases as women become older irrespective of the outcome of the preceding pregnancy.     

The initiation of contraception

Using data from the 1970 National Fertility Study, the trend in the initiation of contraception prior to the first pregnancy is examined. This trend is of interest because of its relationship to the tempo of familybuilding. Using data from a recent marriage cohort, it is shown that use before the first pregnancy is related to age at marriage, age at termination of first pregnancy and the probability of having a premarital conception. For women first married during the decade of the 1960’s, there was a substantial increase in the proportion using contraception before the first pregnancy. This trend is found among both white Catholics and white non-Catholics, but not among blacks. An examination of the specific method used by women using contraception before the first pregnancy reveals a shift from reliance on the traditional methods of diaphragm, condom and douche by the earlier birth cohorts to the use of the pill by the more recent cohorts. An appendix examines the reliability of various measures of the interval of first use of contraception.     

Risk-taking and contraceptive behavior among unmarried college students

The contraceptive behavior of sexually active, never-married college women was examined using multiple regression analyses. Use of an effective method of contraception was highly situation-specific: length of relationship and frequency of intercourse were the variables most highly correlated with use of effective contraception, followed by method of contraception used at first coitus and knowledge of reproduction. Failure to use effective contraception was not associated with low estimates of pregnancy risk, nor with high utility of pregnancy, nor with uniquely high willingness to seek abortion. The results of the present study suggest that use or non-use of effective contraception is mediated by the predictability of sexual intercourse.We would like to thank Ira H. Bernstein for his assistance with computer programming and data analysis. Reprints are available from Ms. Irene Steeger, Center for Population and Family Health, Columbia Unviersity, New York.     

Barriers to contraceptive use among Pakistani couples

Despite the existence of a family planning program in Pakistan since 1965 and widespread knowledge among Pakistanis about contraception, there is a high level of unmet need for family planning. One recent survey found that while 53% of married women express the desire to avoid pregnancy, less than 20% use contraception. A recent Population Council study conducted in urban and rural areas of Punjab province investigated personal beliefs, family circumstances, social norms, and gender relations among 1310 married women and 554 of their husbands. The unmet need for contraception was highest among women over age 30 years, those with more living children, less educated women, and women living in rural areas. The study found that while most Pakistanis approve of family planning, obstacles to contraceptive use exist in most marriages. 97% of respondents who wanted another child wished for a boy. That preference for sons influences contraceptive use behavior. The fear of social disapproval of contraceptive use, perceived opposition from in-laws and husbands, and fear of health side effects and divine punishment were major reasons identified against contraceptive use. Female contraceptive users were more autonomous and likely to make domestic decisions without consulting their husbands, while husbands defer to social and cultural norms.     

Why is contraceptive use inversely associated with lactational amenorrhoea? Qualitative and quantitative insights from Bangladesh

Over the past 15–20 years observations in many parts of the world have revealed a negative association between the natural protection afforded by lactational amenorrhoea and contraceptive uptake. This paper uses qualitative and quantitative data to explore the possible explanations for this nagative association in two Bangladeshi populations, one urban and one rural. The findings suggest that a subconscious substitution of contraceptive protection for natural protection against pregnancy is the most likely explanation. It appears that shorter durations of exclusive breastfeeding have led to earlier resumption of menses which in turn prompts the use of contraception. However, other mechanisms appear to play a subsidiary role, at least in the rural population. Moreover, changes in breastfeeding cannot be viewed as totally independent of the promotion of modern family planning. Evidence suggests that family planning staff are poorly equipped to support breastfeeding, and may often encourage the early introduction of supplements. There is a need to consider ways of promoting exclusive breastfeeding as well as ensuring ready access to contraception when fecundity resumes postpartum. Only such an integrated approach is likely to ensure that both negative effects on child health and unwanted pregnancies are avoided.     

The demographic effects of a contraceptive programme

Abstract The calculation of the number of births prevented for each item of contraceptive service provided entails the integration of a variety of factors relating to the potential fertility of users and the duration and effectiveness of use. This article differs from previous essays of this kind in that estimates of future potential fertility are based not on fertility rates but on age-specific means of inter-live birth intervals, modified by periods of use overlapping post-partum sterility, and by the probabilities attached to the development of permanent sterility and to the successful adoption of extra-programme birth control. In the first three years after acceptance of intra-uterine contraception by some 9,000 postpartum women of several ethnic origins in Singapore, it is calculated that about 4,800 births were prevented.     

Hormonal Contraceptive Use and Discontinuation Because of Dissatisfaction: Differences by Race and Education

The unintended pregnancy rate in the United States remains high, and there are large race and education differences in unintended pregnancy and fertility. These differences make it important to study race and education differences in contraceptive behavior. Using nationally representative data from the 2002 National Survey of Family Growth, this study examines the effects of race and education on the likelihood that women have ever used particular types of hormonal contraception and have ever discontinued hormonal contraception because of dissatisfaction. The results show that blacks and Latinas were more likely to have used injectable contraceptives (??the shot??) and less likely to have used oral contraceptives (??the pill??) than were white women. Women with less education were more likely than college-educated women to have used the shot but there were no significant education differences in use of the pill. Among women who had ever used hormonal birth control, those with less than a college degree were more likely than college-educated women to discontinue the birth control because of dissatisfaction. However, net of education, this study found no significant racial/ethnic differences in discontinuation. The most commonly stated reason for discontinuation because of dissatisfaction was side effects.     

Why women who don't want to get pregnant don't use contraception

In the developing world about 120 million women have an unmet need for contraception. They want to postpone childbearing, yet they do not use contraception, often because of the unavailability of services and supplies. However, according to a recent article by John Bongaarts, the primary factors are lack of knowledge about a contraceptive method, concern about side effects, and the disapproval of the male partner in developing countries. Lack of knowledge means inability to describe the uses of a contraceptive, its side effects, and the locale of its availability. An approximate knowledge index was calculated for such women, which showed that knowledge level positively correlated with contraceptive prevalence. Countries where the index was below 50% had a contraceptive prevalence of 8% only. The determinant reasons why women were reluctant to use the pill, IUD, and sterilization had to do with health and the fear of side effects, such as nausea and increased bleeding. The contraceptive prevalence among these women was reduced by 71% for the pill, 86% for the IUD, and 52% for sterilization. In Sub-Saharan countries nearly 70% of women cited partner disapproval of contraception, although they had never discussed family planning with their partners. The central concept for reducing unmet need is access with quality, which means that services are voluntary, safe, and appropriate in delivery. Some of the recommendations to reduce the unmet need for contraception include: one-on-one same-sex discussions to increase contraceptive knowledge and acceptability; sensitive responses by programs to their client's health concerns; support by service providers to women negotiating with male partners in order to mitigate male disapproval; and sex education and family planning services to reduce unwanted and early sexual contact and pregnancy while girls develop identities apart from mothering roles.     

Contraceptive Initiation Patterns in Thailand

Data from the Thailand Demographic and Health Survey permit a detailed examination of the pattern of contraceptive initiation in terms both of first post-marital contraceptive use and initiation of use following childbirth. A clear trend towards beginning contraception earlier in the family-building process over the course of the fertility transition is evident. During the earliest stage, contraception was first used mainly after a couple had already achieved their desired family size, but later on couples increasingly began use in order to space births, and most recently it has become common to begin use to delay the start of childbearing. There are two distinctive patterns of contraceptive initiation following childbirth. For women who chose sterilization, initiation occurs during the immediate post partum period, while for those who used other methods, use most commonly began shortly after the return of menses. As a result, few Thai women are at present unprotected against unplanned pregnancies for any substantial period of risk following childbirth. Beginning to use contraception early in the family-building process and rapid adoption of contraception following childbirth are now found in most segments of Thai society, testifying to the maturing of Tailand's fertility transition.     

Fertility exposure analysis: A new method for assessing the contribution of proximate determinants to fertility differentials

Summary Several recent papers have dealt with the problem of assessing the impact of the proximate determinants on fertility. All these approaches rely on combining a series of separately estimated aggregate level indicators. This paper proposes an approach which uses individual-level data and thus permits regression analyses as well as analyses for sub-groups. In the course of development it became clear that there are several deficiencies and inconsistencies in the measurement and formation of indices proposed elsewhere, which are overcome. We illustrate our approach with data from the Dominican Republic. The approach used involves attributing exposure to one or more of several states, including pregnancy, lactational and non-lactational components of post-partum amenorrhoea, absence of sexual relations and contraception. Key elements are efficacies of contraception and components of post-partum infecundity and the treatment of overlaps through an explicit hierarchy. We treat both unconditional (or additive) and conditional analyses. Intriguing findings on the age-specific pattern of fertility control emerge. Major advantages of regression analysis, such as simultaneous treatment of several variables and estimation of sampling variation are stressed.     

Contraception provision in the postpartum period: Knowledge,views and practices of midwives

BackgroundWomen are susceptible to unintended pregnancies in the first year after giving birth, particularly as consideration of contraception may be a low priority during this time. Discussing and providing contraception before women leave hospital after giving birth may prevent rapid repeat pregnancy and its associated risks. Midwives are well placed to assist with contraceptive decision-making and provision; however, this is not routinely undertaken by midwives in the Australian hospital setting and little is known regarding their views and experiences in relation to contraception.MethodsAn anonymous survey was conducted with midwives at two urban hospitals in New South Wales to better understand their contraceptive knowledge, views and practices regarding midwifery-led contraception provision in the postpartum period.FindingsThe survey was completed by 128 midwives. Most agreed that information about contraception provided in the postpartum period is valuable to women, although their knowledge about different methods was variable. The majority (88%) believed that midwives have a role in providing contraceptive information, and 79% reported currently providing contraceptive counselling. However, only 14% had received formal training in this area.ConclusionFindings demonstrate that most midwives provide some contraception information and believe this is an important part of a midwife’s role. Yet most have not undertaken formal training in contraception. Additional research is needed to explore the content and quality of midwives’ contraception discussions with women. Training midwives in contraceptive counselling would ensure women receive accurate information about available options. Upskilling midwives in contraception provision may increase postpartum uptake and reduce rapid repeat pregnancies.     

Secrecy and silence: why women hide contraceptive use

A recent Population Council survey of 1860 married women and 1056 of their husbands in urban Zambia found that many women who use contraception do so without their husbands' knowledge and that those women who hid their practice of contraception from their husbands did so because they found it very difficult to bring up the subject of family planning with them. These findings indicate that low levels of contraceptive use are not the result of a simple communication matter. Sex and sexuality are often the exclusive domain of African husbands. As such, if a wife initiates a discussion of family planning, she may threaten her husband's sense of control and create discord within the family. The culture of silence about sex and sexuality is very strong in Africa. 57% of women stated that were they to propose contraceptive use with their husbands and the husband opposed such practice, they would nonetheless use them without his knowledge. 7% of the women stated that if their husbands disapproved of contraceptive use, they would nonetheless openly use a method against his wishes. The majority of women correctly perceived their husbands' views on family planning use and fertility preferences. In focus groups, both men and women said that they did not believe that women have the right to independently act upon their reproductive preferences. A husband's inadequate financial support of his children could, however, justify clandestine contraceptive use. These findings point to the need to include easily hidden methods in the mix of contraceptives family planning programs offer. Moreover, service providers should not automatically encourage husbands' involvement. A client's right to privacy should always be respected.     

Demographic aspects of lactation and postpartum amenorrhea

Interrelations between lactation and post-partum amenorrhea are studied from the reports of about 5,000 married women included in a 1966 Follow-up Survey of Acceptors of an Intrauterine Device (IUD) in Taiwan. The length of post-partum amenorrhea and of breastfeeding are positively associated. On an average, breastfeeding delayed the resumption of menstruation by about 7 months. The association between lactation and amenorrhea is not accounted for by differences in mother’s age, parity, education and her place of residence. A multiple regression analysis suggests that (1) age affects amenorrhea both directly and through lactation, (2) parity has no independent effect on either lactation or amenorrhea, and (3) education and place of residence affect amenorrhea mainly through the cultural variations in the practice of breastfeeding.     

Metal ring - a safe,effective, economical and convenient approach of fertility regulation

A survey of 25,000 women from 1450 villages in China has indicated that the metal ring is a safe, effective, and convenient method of contraception. The continuation rate was 79.3% after 1 year of use and 55.2% after 5 years of use. Factors that were most influential in continuation included insertion after menstruation, insertion during breastfeeding, age at 1st birth, insertion after abortion, level of the health care system, age at insertion, intensity of labor, number of births before insertion, and number of abortions before insertion. The expulsion rate ranged from 11.4-20.7%. The accidental pregnancy rate was 2.4-6.8%. Events such as expulsion and unintended pregnancy showed an association with parity, number of abortions, level of the health care system, and insertion during the breastfeeding period. No serious complications were noted in any of the women fitted wih metal rings.     

Application of life table techniques to measurement of contraceptive effectiveness

Two problems are associated with the analysis of use-effectiveness of contraception. First, couples belonging to a sample of contraceptors typically vary in their monthly chances of contraceptive failure. Second, one does not observe for many, and perhaps a majority of the couples, how long they can remain protected with the contraceptive, because either they are stopping contraception to plan a pregnancy or else observation of them is being interrrupted by lost contact, by discontinuation of contraception for other reasons, or by the end of the study. It is argued that because of these two problems-namely, sample heterogeneity and incomplete histories-the Pearl pregnancy rate, which has been traditionally used to measure contraceptive effectiveness, is inadequate.A life table method is described that permits one to combine incomplete histories with complete ones for purposes of estimating the proportions of the sample that might have remained protected for specified periods if all members had remained under observation for these periods. The versatility of the techniques is illustrated in relation toa retrospective survey. A detailed account of procedure is given. Finally, it is shown that only under specialized conditions that are rarely met in practice is it possible to estimate the results of the new technique from knowledge of Pearl pregnancy rates alone.     

Conceptions of pregnancy health and motivations for healthful behavior change among women in American Samoa

Background

American Samoan women are particularly at risk of obesity-related non-communicable disease (NCD), requiring efficacious interventions to protect their health and that of their infants. Prior studies have identified pregnancy as an ideal time for behavior change interventions related to NCD.