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991.
Samuel H. Preston 《Demography》1983,20(2):213-226
This paper presents a simple method for estimating a birth rate and a level of mortality for an intercensal period. The birth rate is estimated from the intercept of a line fitted to data and the level of mortality from the slope of that line. The formula that is developed is based upon a recent generalization of stable population relations. An estimate of childhood mortality level is an optional but significant piece of additional input. An important by-product of the procedure is an estimate of the true age distribution. 相似文献
992.
Page HJ 《Population studies》1977,31(1):85-106
Summary Model fertility schedules based on the proportions married and the age pattern of marital fertility are unsatisfactory to the extent that marital fertility does not depend on age alone but also on other factors. Most notably, models based just on age fail to allow for differences between populations in their composition by marriage duration. Examination of the major series of fertility rates specific by both age and duration of marriage (Sweden 1911-70, England and Wales, 1941-70) reveals striking underlying regularities. The marital fertility rates observed at any given point in time can be factored into three independent components - an overall level, a vector of age effects common to all marriage durations and a vector of duration effects common to all age groups. A simple product of these three components is shown to approximate the data very closely over the entire series, despite major changes in the aggregate levels of fertility and nuptiality during the periods concerned. Not only are the data tightly structured, conforming very closely to this simple multiplicative model, but the vectors of age and duration effects themselves are shown to exhibit clear and meaningful regularities. 相似文献
993.
994.
The present study examined the relationship between relational quality and three different types of jealousy-reactive, anxious and possessive jealousy. The sample consisted of 76 gay men, 79 lesbians, 70 heterosexual women and 70 heterosexual men. Findings show that different types of jealousy affect relationship quality differently and do so differently for homosexuals and heterosexuals. Among heterosexuals and especially gay men--but not among lesbians--anxious jealousy was negatively related to relationship quality. In contrast, among heterosexuals--but not among gay men or lesbians--reactive jealousy was positively related to relationship quality. The present study shows that distinguishing between different types of jealousy is necessary to entangle the diverse effects of jealousy on the quality of homosexual and heterosexual relationships. 相似文献
995.
A key challenge to theories of long-run economic growth has been linking the onset of modern growth with the move to modern fertility limitation. A notable puzzle for these theories is that modern growth in England began around 1780, 100 years before there was seemingly any movement to limit fertility. Here we show that the aggregate data on fertility in England before 1880 conceals significant declines in the fertility of the middle and upper classes earlier. These declines coincide with the Industrial Revolution and are of the character predicted by some recent theories of long-run growth. 相似文献
996.
Clark WA 《Demography》2008,45(3):515-535
For the past decade and a half a concerted effort has been undertaken to determine whether policy interventions in residential location can solve the problems of inner-city poverty and racial concentration. Studies based on data from the Gautreaux litigation and the U.S. Department of Housing and Urban Development (HUD)-sponsored Moving to Opportunity (MTO) program have provided an overall optimistic interpretation of the possibilities of improving inner-city lives via mobility vouchers and counseling. A reanalysis of the data from the MTO program, focusing specifically on African American households, suggests greater caution in the interpretation of the findings from either Gautreaux or the MTO program. No statistically significant difference exists between the percentage of poor or the percentage of African Americans in the current neighborhoods between MTO and Section 8 experimental groups. In some cases, there is no statistically significant difference between those who move with a voucher and those who move without any assistance at all. Although there is some evidence that MTO programs have brought specific gains for individual families, claims for the MTO program as a whole need to be treated with a great deal more caution than they have been to date. 相似文献
997.
Paul Flatau Ian James Richard Watson Gavin Wood Patric H. Hendershott 《Journal of Population Research》2007,24(1):51-71
The decision to remain in or leave the parental home represents the first housing career choice of young people. In this paper,
we examine the parental home leaving outcomes for Australian birth cohorts in the twentieth century using recall questions
contained in the Household, Income and Labour Dynamics in Australia Survey. The findings from survival analysis and hazard
function modelling is that a continuous, gradual reduction in the age of first leaving the parental home in Australia is evident
up to the 1947–51 birth cohort, followed by stability and then a rise in age of first leaving home for the most recent birth
cohorts. Birth cohort effects remain significant even after other measured determinants of parental home leaving are taken
into account. The paper confirms the strong roles that education, family background and ethnicity have on parental home leaving
outcomes. 相似文献
998.
David J. Sharrow Jessica Godwin Yanjun He Samuel J. Clark Adrian E. Raftery 《Population studies》2018,72(1):1-15
In 2015, the United Nations (UN) issued probabilistic population projections for all countries up to 2100, by simulating future levels of total fertility and life expectancy and combining the results using a standard cohort component projection method. For the 40 countries with generalized HIV/AIDS epidemics, the mortality projections used the Spectrum/Estimation and Projection Package (EPP) model, a complex, multistate model designed for short-term projections of policy-relevant quantities for the epidemic. We propose a simpler approach that is more compatible with existing UN projection methods for other countries. Changes in life expectancy are projected probabilistically using a simple time series regression and then converted to age- and sex-specific mortality rates using model life tables designed for countries with HIV/AIDS epidemics. These are then input to the cohort component method, as for other countries. The method performed well in an out-of-sample cross-validation experiment. It gives similar short-run projections to Spectrum/EPP, while being simpler and avoiding multistate modelling. 相似文献
999.
Cornelia Helfferich Monika Häußler-Sczepan 《?sterreichische Zeitschrift für Soziologie》2002,27(4):42-62
The topic of this paper is the change of perspective from the concept of “coping with illness” in a psychological sense to a concept of coping as “living with (chronic) illness” in a sociological sense. Whereas psychological and even some sociological research presupposes assumptions on causes and essentials of stress as well as on successful coping, we focused on the different ways, in which subjects define strain and their personal aim of coping. These subjective views might differ from the definitions of scientists as well. Furthermore we focus on the social constructions of illness and “normal living” and the social rules of coping with daily hassles, which underlay the subjective views. Assuming that the ways chronically ill resp. disabled persons look at stress and daily hassles is part of their coping, we conclude that stress and coping are mutually constituting each other. This dialectic process is influenced by the persons current situation, by the individual’s history and by cultural rules concerning appropriate coping resp. living with strain in general. Looking at these social rules and how they are modified under the conditions of illness and handicap was the topic of our research project “LIVE—Living and Defending Your Interests—Disabled Women”, financed by the German Fed. Ministry for Family, Seniors, Women and Youth and conducted 1996–1998. In this study a questionnaire was sent to 16 to 60 years old disabled women (return: N=987). Additionally a qualitative interview was conducted with N=60 of them. From a biographical approach the reconstruction of the main subjective patterns in their life histories led us to the social rules of appropriate “coping”. We can take this as a starting point for a sociological discussion of everyday living with chronic illness, that focuses on the social constitution of subjective meanings of stress resp. coping with illness, includes the social context and allows to integrate the gender perspective. 相似文献
1000.
Ray H. Bixler 《Journal of sex research》2013,50(2):255-267
Two hundred seventy‐five undergraduate single women were surveyed to investigate whether a continuum of premarital sexual pressure exists. Participants were asked if they were pressured into 21 different sexual behaviors. For each behavior, they responded to forced‐choice questions about the stage of dating at which the pressure occurred and the type of pressure most often experienced. Over 50% of the participants reported being pressured into kissing, breast and genital manipulation, and oral contact with their partners' genitals. Further, participants were likely to be pressured into kissing and some forms of fondling while casually dating; and masturbation, oral genital contact, and intercourse while seriously dating. Guttman analysis supports the existence of a four‐step continuum of sexual pressure from persistent physical attempts, to positive statements, to threats of force, to the use of force. 相似文献