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Context: Much of what is known about the choice of sterilization as a contraceptive method is based on data from married women or couples. Because of increasing rates of cohabitation, divorce and repartnering, however, the relationship context in which sterilization decisions are made has changed., Methods: The 1995 National Survey of Family Growth includes the complete birth and union histories of 10,277 white, black and Hispanic women. The distribution of union status and marital history at the time of tubal sterilization was estimated for these three racial and ethnic groups among the 799 women who had had a tubal ligation in 1990-1995 before age 40. Cox proportional hazard regression models were used to estimate the effects of union status and marital history on the risk of tubal sterilization. The analysis controlled for the woman's age, parity, race and ethnicity education, region, experience of an unwanted birth and calendar period., Results: Among women who obtained a tubal sterilization, most whites (79%) and Hispanics (66%) were married when they had the operation, compared with only 36% of black women. At the time of their sterilization, 46% of black women had never been married. Among all women, regardless of race and ethnicity and net of all controls, the probability of tubal sterilization is about 25% lower for single, never-married women than for cohabiting or married women. Cohabitation does not reduce the likelihood in comparison to marriage, however. Higher rates of tubal sterilization among Hispanic women are accounted for by their higher parity at each age; differences in parity or marriage by race only partially account for the relatively higher rates of tubal sterilization among black women., Conclusions: Because women currently spend greater proportions of their lives outside of marriage or in less-stable cohabiting partnerships than they did in the past, they are increasingly likely to make the decision to seek sterilization on their own. As a result, the gender gap in contraceptive sterilization will likely increase. The possibility of partnership change is an important consideration in choosing sterilization as a contraceptive method.

Divorce, nonmarital childbearing, and cohabitation are reshaping family experience in the United States. Because of these changes, our traditional definitions of families decreasingly capture of the social units of interest. We have noted how a significant proportion of officially defined single-parent families actually are two-parent unmarried families. The present paper expands on this perspective with respect to stepfamilies. We must broaden our definition of stepfamilies to include cohabitations involving a child of only one partner, and must recognize the large role of nonmarital childbearing in the creation of stepfamilies. We find that cohabitation and nonmarital childbearing have been important aspects of stepfamily experience for at least two decades, and that this is increasingly so. To define stepfamilies only in terms of marriage clearly underestimates both the level and the trend in stepfamily experience: when cohabitation is taken into account, about two-fifths of all women and 30% of all children are likely to spend some time in a stepfamily.

Data from the National Survey of Families and Households for 1987-1988 are used to explore methodological and substantive issues concerning marital dissolution in the United States. "The analysis finds that marital disruptions are seriously underreported by males, making the analysis of male marital histories problematic. Also, the potential impact of reconciliations on the estimates of recent marital disruption based on separation is explored; no upward bias is likely to result from the inclusion of separations that may subsequently reconcile. The impact of a wide variety of factors on the risk of marital disruption is examined using proportional hazard techniques. Among them are included parental background factors, respondent's characteristics at the time of marriage, differences in spouses' characteristics, and joint activity statuses of marital partners in the first year of marriage. The risk of marital disruption is highest among women with young age at marriage, low education, a cohabitation history, and those whose spouse has been married previously. Parental family disruption affects marital stability primarily through age at marriage and cohabitation. Religious and educational heterogamy and male unemployment reduce marital stability.", (excerpt)

The relationship between desired and achieved fertility may be misspecified by excluding husbands' fertility desires or by confounding effects of shared desires with the resolution of conflicting desires. Using couple data from the classic Princeton Fertility Surveys, we find relatively large husband effects on fertility outcomes as well as unique effects of spousal disagreement. Wives and husbands were equally likely to achieve fertility desires, and disagreeing couples experienced fertility rates midway between couples who wanted the same smaller or larger number of children. These conditions do not hold, however, when we include willingness to delay births for economic mobility as part of the measure of fertility desires. Among couples who both wanted a third child, only husbands' willingness to delay births had significant negative effects on birth rates.

Data from the 1987-1988 National Survey of Families and Households are used to provide national estimates of cohabitation trends and levels. The rapid increase since around 1970 is documented over both birth cohorts and marriage cohorts. Almost half of the persons in their early 30s and half of the recently married have cohabited. Changes in the proportion ever married are compared with changes in the proportion who have either married or cohabited. Much of the decline in marriage has been offset by increased living together without being married. The stability of unions of various types is compared. Cohabitations end very quickly in either marriage or disruption. About 60 percent of all first cohabitations result in marriage. Cohabiting unions and marriages preceded by cohabitation are much more likely to break up than are unions initiated by marriage. Multivariate analysis reveals higher rates of cohabitation among women, whites, persons who did not complete high school, and those from families who received welfare or who lived in a single-parent family while growing up.

Data from the 1980 June Current Population Survey are used to estimate the incidence and duration of marital disruption as experienced by children. Rates during the 1977-1979 period suggest that about two-fifths of children born to married mothers will experience the disruption of that marriage while they are children. When children born before their mothers' first marriage are included, half of recent cohorts are likely to spend some time in a single parent family. These rates increased consistently over the 1970s. For the majority of those who experience a marital disruption, over five years are likely to elapse before the mother remarries. Furthermore, about half of the children who go through a divorce and remarriage will experience the breakup of the new family as well. At the same time, the interval between separation and divorce is less than a year for most children involved. There are major differences in these rates by race and important differences as well by education and age of mother. Replication of our earlier estimates for comparable periods was quite good for the estimates of the experience of marital dissolution, but somewhat less so for the analysis of mother's subsequent remarriage.

Data from the 1970 National Fertility Study are used to assess the extent and determinants of post-nuptial education among women in the United States. Over one-fifth of all women have attended high school or college since marriage; over one-third either have returned to school or anticipate returning to an academic institution sometime in the future. This phenomenon is apparently increasing since women married less than five years have already attended school in as great a proportion as women married 15-19 years. Examination of differentials reveals for both blacks and whites that post-nupital education is higher among women who: (1) attended college before marriage, (2) married early, (3) are currently separated or divorced, (4) support egalitarian sex-role attitudes, or (5) whose most recent occupation is in the professional, managerial, or administrative category. Post-nuptial trends in education undoubtedly reflect the much broader social phenomenon of changing sex-role perceptions.

Taking care to minimize the truncation bias inherent in cross-sectional data and controlling for other variables, this paper demonstrates the strong effects of both age and marital status at first birth on the pace of subsequent fertility. These effects are particularly strong in the interval immediately following the first birth but persist even into the fourth interval. Important differences are found with respect to the experience of rapid fertility, rather than in the mean lengths of intervals. These results add to the growing attention to the social dimensions of age as a variable in fertility processes.

Data from the National Survey of Families and Households indicate that 10 percent of children born between 1960 and 1968 were born outside of marriage and that before age 16, another 19 percent experienced the dissolution of their parents' marriage. When parental death and other causes of family disruption are also considered, 36 percent of the children in that age cohort had been separated from at least one parent before they reached age 16, compared with 22 percent of children born two decades earlier. In all, 27 percent of nonmarital births between 1970 and 1984 were to cohabiting couples; the proportion was 40 percent for Mexican Americans, 29 percent for non-Hispanic whites and 18 percent for blacks. About two-thirds of cohabiting couples who had children during the 1970s eventually married; however, before these children reach age 16, 56 percent of them are likely to experience the disruption of their parents' marriage, in comparison with 31 percent of children born to married parents. Overall, about half of all children born between 1970 and 1984 are likely to spend some time in a mother-only family, and more than half of these children reach age 16 without having had a stepfather.

The article presents the lecture of the author, delivered at the Population Association of America, 1990. The institution of the family is not seen as a fixed form against which people can judge current behavior. Rather, it is the collective representation of their changing family experience, as that experience interacts with its environment. Normative expectations play a major role in structuring family patterns, but they also tend to lag behind changing behavior, accommodating in time to behavioral changes. The author is aware that the stance taken here may appear to run counter to historical work discrediting various links between modernization and family change. He thinks the differences are more apparent, however, than real. This perspective does not require close temporal association between economic or structural shifts and family changes. Underlying ecological contexts of organizational change may create tensions, much like those at a fault line, the effects of which are not seen until the confluence of forces overcomes inertia.

The post-1980 decline in the crude divorce rate must be interpreted in the context of the long-term trend and in terms of what we know about composition effects on crude measures-particularly given shifts in age at marriage and the age composition effects of the baby boom. Data from the June 1985 Current Population Survey permit more detailed, exposure-specific measurements as well as the use of separation as the event terminating marriage. Estimates from these data suggest a decline followed by a recovery. Taking into account well-known levels of underreporting, we find that recent rates imply that about two-thirds of all first marriages are likely to end in separation or divorce. We examine the persistence of major differences in marital stability and evaluate the comparative stability of first and second marriages. [ABSTRACT FROM AUTHOR]

There was an impressive increase between 1965 and 1970 in the prevalence of contraceptive sterilization, an increase that accelerated in the later years of the period and was shared in by virtually all subgroups considered, Among couples in 1970 for whom sterilization had been an option (recognizing that it is a terminal method), about one of every five had chosen this method of contraception. About half of all sterilizations were vasectomies, though vasectomies have outnumbered tubal ligations in recent years. Differentials in prevalence and in increases during 1965-1970 are reported for a number of life-cycle and social variables. In addition, a profile of the contraceptive sterile is presented for recent sterilizations. Significant proportions are relatively young and, of low parity at the time of sterilization. In the context of the continued diffusion of the pill and IUD and increases in legal abortion, the net demographic effect of increasing sterilization is regarded as low, though sterilization is an important component of an effective fertility control regime. [ABSTRACT FROM AUTHOR]