Truncated cross-sectional average length of life: A measure for comparing the mortality history of cohorts

Period life expectancies are commonly used to compare populations, but these correspond to simple juxtapositions of current mortality levels. In order to construct life expectancies for cohorts, a complete historical series of mortality rates is needed, and these are available for only a subset of developed countries. The truncated cross-sectional average length of life (TCAL) is a new measure that captures historical information about all cohorts present at a given moment and is not limited to countries with complete cohort mortality data. The value of TCAL depends on the rates used to complete the cohort series, but differences between TCALs of two populations remain similar irrespective of the data used to complete the cohort series. This result is illustrated by a comparison of TCALs for the US with those for Denmark, Japan, and other high-longevity countries. Specific cohorts that account for most of the disparity in mortality between the populations are identified.

Supplementary material for this article is available at: http://dx.doi.org/10.1080/00324728.2015.1019955     

An exploration of China's mortality decline under Mao: A provincial analysis, 1950–80

Between 1950 and 1980, China experienced the most rapid sustained increase in life expectancy of any population in documented global history. We know of no study that has quantitatively assessed the relative importance of the various explanations proposed for this gain in survival. We have created and analysed a new, province-level panel data set spanning the decades between 1950 and 1980 by combining historical information from China's public health archives, official provincial yearbooks, and infant and child mortality records contained in the 1988 National Survey of Fertility and Contraception. Although exploratory, our results suggest that gains in school enrolment and public health campaigns together are associated with 55–70 per cent of China's dramatic reductions in infant and under-5 mortality during our study period. These results underscore the importance of non-medical determinants of population health, and suggest that, in some circumstances, general education of the population may amplify the effectiveness of public health interventions.

Supplementary material for this article (Babiarz et al. 2014, Suppl.) is available at: http://dx.doi.org/10.1080/00324728.2014.972432     

An investigation of the unexpectedly high fertility of secular,native-born Jews in Israel

Secular, native-born Jews in Israel enjoy the socio-economic status of many affluent populations living in other democratic countries, but have above-replacement period and cohort fertility. This study revealed a constellation of interrelated factors which together characterize the socio-economic, cultural, and political environment of this fertility behaviour and set it apart from that of other advanced societies. The factors are: a combination of state and family support for childbearing; a dual emphasis on the social importance of women's employment and fertility; policies that support working mothers within a conservative welfare regime; a family system in which parents provide significant financial and caregiving aid to their adult children; relatively egalitarian gender-role attitudes and household behaviour; the continuing importance of familist ideology and of marriage as a social institution; the role of Jewish nationalism and collective behaviour in a religious society characterized by ethno-national conflict; and a discourse which defines women as the biological reproducers of the nation.

Supplementary material for this article is available at: http://dx.doi.org/10.1080/00324728.2016.1195913     

The boundaries of genocide: Quantifying the uncertainty of the death toll during the Pol Pot regime in Cambodia (1975–79)

The range of estimates of excess deaths under Pol Pot's rule of Cambodia (1975–79) is too wide to be useful: they range from under 1 to over 3 million, with the more plausible estimates still varying from 1 to 2 million. By stochastically reconstructing population dynamics in Cambodia from extant historical and demographic data, we produced interpretable distributions of the death toll and other demographic indicators. The resulting 95?per cent simulation interval (1.2–2.8 million excess deaths) demonstrates substantial uncertainty over the exact scale of mortality, yet it still excludes nearly half of the previous death-toll estimates. The 1.5–2.25 million interval contains 69 per cent of the simulations for the actual number of excess deaths, more than the wider (1–2 million) range of previous plausible estimates. The median value of 1.9 million excess deaths represents 21?per cent of the population at risk.

Supplementary material for this article is available at: http://dx.doi.org/10.1080/00324728.2015.1045546     

Genetic influence on age at first birth of female twins born in the UK, 1919–68

Using a sample of monozygotic (945, 42?per cent) and dizygotic (1,329, 58?per cent) twin pairs born 1919–68 in the UK, we applied innovative tobit models to investigate genetic and environmental influences on age at first birth (AFB). We found that a substantial part (40?per cent) of the variation in AFB is caused by latent family characteristics. Genetic dispositions (26?per cent) play a more important role than the shared environment of siblings (14?per cent), with the non-shared environment/measurement error having the strongest influence (60?per cent). Like previous studies, this study reveals marked changes in estimates over time, and supports the idea that environmental constraints (war or economic crisis) suppress and normative freedom (sexual revolution) promotes the activation of genetic predispositions that affect fertility. We show that the exclusion of censored information (i.e., on the childless) by previous studies biased their results.

Supplementary material for this article is available at: http://dx.doi.org/10.1080/00324728.2015.1056823     

A proposed explanation of the fertility gap differentials by socio-economic status and modernity: The case of Egypt

The present paper is part of a larger analysis of data collected in the summer of 1970 in the city of Cairo.1 A joint study between the Institute of Statistical Studies and Research and Centre for Sociological Studies, Cairo. The present analysis is based on a sub-sample of 569 households.     

Breast feeding,mortality in childhood and fertility in a rural zone of Senegal

The data analysed in the present study were collected in the course of a demographic survey conducted at repeated intervals in the Sine-Saloum region of Senegal.1 This study was financed by a grant from the ‘Fond d'aide et de coopération’ of France, from 1963-65, and by the WHO Section for Research on Human Reproduction from 1966-67. The study was conducted by ORSTOM in collaboration with the Statistical Service of Senegal. The data used in this paper were analysed at INED. Only the data concerning the Sine (Niakhar) area are analysed here.     

Sodomy’s Penumbra

This article advocates a sodomitical approach to sodomy. Its approach is framed alongside and against three historical glosses on sodomy law: first, that sodomy law instantiates homophobia; second, that sodomy law targets sexual violence against boys; third, that sodomy law reaches assaultive sex against women that did not register as assaultive enough to qualify as “rape” by sexist juries. The first story of sodomy law is mostly wrong. The other two glosses pivot on protection: protection of boys or protection of girls and women. These accounts, tethered to identitarianism, underplay sodomy law’s multiplicity, as a source and symptom of our conflicted understandings of when sex is sex and when sexual violence is rape.

The first part of the article explains my choice of sodomitical sites. The second part complicates the story of sodomy as phobic. The third part complements the historiography of sodomy as protective against boys. The fourth part argues that the gloss on sodomy law as a corrective to disbelieved women is appealing but untrue. The final part makes the case that fellatio matters. The prevalence of forcible oral sex in sodomy cases intimates a cultural pluripotence of oral sex, as well as shifting definitions—in law and life—of sex and rape. This last story of sodomy law remains undetected under an identitarian radar.     

What We Can’t See? Understanding the Representations and Meanings of UAI,Barebacking, and Semen Exchange in Gay Male Pornography

Since the late 1990s, the use of condoms within gay male pornography has been on the wane. Moving from a niche category into more mainstream forms of commercial pornography, unprotected anal sex has become a dominant theme within this sphere of gay male sexual representation. However, while the definition of what constitutes bareback pornography may at first sight appear unproblematic, this article argues that meanings and understandings of unprotected anal intercourse (UAI) are not constant across all genres of gay male pornography. Using textual analysis and focus group methods, the authors demonstrate how subcultural understandings of UAI are dependent on a variety of textual factors. These include the age, body type, and racial identities of the performers; the setting, context, and mise-en-scène of the pornographic scene; and the deployment of power relations between the insertive and receptive partners.

The article concludes by suggesting that the recognition of the diverse representations of “barebacking” found in contemporary gay male pornography should influence the ways in which health promotion strategies address discussions of UAI and bareback pornography.     

Measuring longevity achievements under welfare interdependencies: a case for joint life expectancy indicators

Whereas period life expectancy constitutes an intuitive indicator of the survival conditions prevailing at a particular period, this paper argues that, given the existence of welfare interdependencies, that widespread indicator is nonetheless an incomplete measure of the longevity achievements relevant for human well-being. The central importance of coexistence for human-beings implies that usual life expectancy measures should be complemented by joint life expectancy indicators, which measure the average coexistence time under particular survival conditions. After a study of the theoretical foundations of ‘single’ and ‘joint’ life expectancy indicators, it is shown that joint life expectancy measures tend to enrich significantly the comparison of longevity achievements across countries and periods. Moreover, the introduction of joint life expectancy indicators—as a complement to conventional life expectancy measures—into multi-variable indexes such as the United Nations’ HDI is also shown to affect international rankings of standards of living to a non negligible extent.

Prospective study of birth interval dynamics in rural Bangladesh

A group of 209 married, fecund women in rural Bangladesh were studied prospectively for 24 months from 1969 to 1971 to define some of the biological and sociological factors relating to fertility performance. These women were selected from a larger study population of 112,000 that had been followed with a daily house-to-house vital registration programme since 1966. The selected women were interviewed bi-weekly and were asked questions about menstruation, pregnancy, lactation, husband's occupational absences, and monthly urine tests for pregnancy were taken. The results for 193 non-contracepting women revealed that the seasonal pattern of births previously observed in this population could be associated with a corresponding seasonal pattern of conceptions and that this was due to a seasonal trend in fecundability. The highest conception rates were in the coolest months of the year. Post-partum lactational amenorrhoea was very prolonged, averaging 17 months for women with a surviving child. The appearance of the first post-partum menstrual flow (onset of ovulation) also had a seasonal trend which could not be adequately explained. The median waiting time to conception, once menstruation had resumed was eight months. This interval was influenced by seasonal fluctuations, as well as by the age of women and by husbands' absences. The foetal wastage rate was 15·0 per 100 conceptions, with 62 per cent of the foetal losses occurring during the second month of gestation. Overall, the average birth interval was 33 months, with the prolonged lactational amenorrhoea accounting for almost 45 per cent of this interval.      

Trends in life expectancy in wellbeing

Objectives: This paper describes anddiscusses trends in life expectancy inwellbeing between 1989 and 1998.Methods: Data on wellbeing by theBradburn Affect Balance Scale is obtained fromthe Netherlands Continuous Health InterviewSurveys for the calendar years from 1989 to1998. Using Sullivan's method, life expectancyin wellbeing is calculated.Results: For males at the age of 16, lifeexpectancy in wellbeing increases significantlyfrom 52.7 years in 1989 (90.1% of the totallife expectancy) to 54.4 years in 1998(90.8%). This increase is almost completelycaused by the increase in total lifeexpectancy. For females at the age of 16, lifeexpectancy in wellbeing raises significant from54.4 years in 1989 (84.1%) to 56.2 years in1998 (86.3%). This increase is almostcompletely caused by a decrease in the numberof years in a state of distress.For both males and females at the age of 65,the significant increase of life expectancy inwellbeing exceeds the increase in total lifeexpectancy and is mainly caused by the decreasein number of years in distress.Conclusion: Contrary to life expectancyin good perceived health and to disability freelife expectancy – which show a decreasing trend– the overall wellbeing of the population isincreasing. It seems that aspects in human lifethat contribute to wellbeing or quality of lifeother than physical health are gaining inimportance. This makes life expectancy inwellbeing a less appropriate instrument tomonitor changes in population health, but auseful instrument to measure population qualityof life.     

Disability among children of immigrants from India and China: Is there excess disability among girls?

We investigate whether there is excess morbidity among daughters of Indian or Chinese immigrants in the US by studying the prevalence of disability among children. We use data from the 2012–14 American Community Surveys on approximately 20,000 US-born children of Indian and Chinese immigrants. Children of US natives are used as a comparison group to account for innate differences in disability between the sexes. Results indicate that there is excess disability among daughters compared with sons among children of Chinese immigrants and children of immigrants from northern or western Indian states; this excess disability declines with younger age at arrival or longer exposure to the host country. Analysis using children of Filipino immigrants as an alternative comparison group yields similar excess disability rates for females.

Supplementary material is available for this article at: https://doi.org/10.1080/00324728.2020.1762911     

High Levels of Same-Sex Experiences in the Netherlands: Prevalences of Same-Sex Experiences in Historical and International Perspective

Some authors suggest that the public stance toward homosexuality can influence the prevalence of same-sex experiences (e.g., Butler, 2005 Butler, A. C. 2005. Gender differences in the prevalence of same-sex partnering: 1988–2002. Social Forces,, 84(1): 421–449. [Crossref], [Web of Science ®] , [Google Scholar]). Since the Dutch stance toward homosexuality has become more positive during the last decades, it was hypothesized that the current Dutch prevalences of same-sex experiences are higher than in other times and countries. This hypothesis was investigated using the data of a recent Dutch population study, and comparing these results to those from previous and international studies. The current Dutch figures were indeed higher than recent figures from other countries. Among women, the recent figures were also higher than those found in previous Dutch studies. The prevalence of same-sex experiences among Dutch males stayed the same. These results and the methodological aspects of the study are discussed.     

The Balanced Worth: A Procedure to Evaluate Performance in Terms of Ordered Attributes

There are many problems in the social sciences that refer to the evaluation of the relative performance of some populations when their members’ achievements are described by a distribution of outcomes over a set of ordered categories. A new method for the evaluation of this type of problems is presented here. That method, called balanced worth, offers a cardinal, complete and transitive evaluation that is based on the likelihood of getting better results. The evaluation of each society is based on the probability of obtaining better results with respect to the others. The balanced worth is a refinement of “the worth” (Herrero and Villar in PLoS ONE 8(12):e84784, 2013.  https://doi.org/10.1371/journal.pone.0084784) that overcomes its excessive sensitivity to the differences, due to the presence of ties. We also discuss how this method can be applied for the case of heterogeneous populations and show how it can be applied in different contexts. An empirical example, regarding life satisfaction in Spain is used to illustrate the working of this method.     

Social Networks,Social Cohesion,and Later-Life Health

Our study contributes to the literature acknowledging the joint role of social networks and social cohesion in shaping individual’s health, focusing on the older population aged 50 and over. Exploiting rich ego-centered social network data from the Survey of Health, Ageing and Retirement in Europe and following the conceptual model of social integration and health proposed by Berkman et al. (Soc Sci Med 51:843–857. doi:10.1016/S0277-9536(00)00065-4, 2000), we estimate multilevel models of self-reported and observer-measured later-life health outcomes. These models simultaneously account for (a) characteristics of 39,551 respondents’ personal social networks and (b) a measure of social cohesion—namely, participation in social organizations—across 57 Continental European regions, clustered in 14 countries. We find significant associations between individuals’ health and various social network characteristics (size, support, quality) as well as social cohesion. Moreover, cross-level interaction effects suggest that the social-network-health nexus is contextually bound. We conclude with a discussion of limitations and perspectives for future research.     

“Life Without Line Dancing and the Other Activities Would be Too Dreadful to Imagine”: An Increase in Social Activity for Older Women

ABSTRACT

The literature on aging is replete with the positive effects of physical exercise on the well-being of older adults. Some Glass, T. A., de Leon, C. M., Marottoli, R. A. and Berkman, L. F. 1999. Population based study of social and productive activities as predictors of survival among elderly Americans. British Medical Journal, 319: 478–483. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar] suggest, however, that the potential impact of social activities has not received adequate attention, and others Lennartsson, C. and Silverstein, M. 2001. Does engagement with life enhance survival of elderly people in Sweden? The role of social and leisure activities. The Journals of Gerontology: Psychological Sciences and Social Sciences, 56B(6): S335–S342. [Crossref] , [Google Scholar] note the importance of distinguishing between the physical and nonphysical impact of these activities. This study investigated whether line dancing, a physical activity, led to an increase in social activity. Thirty women over the age of 60 were interviewed to discover how line dancing affected them. Content analysis of the interviews helped identify various themes indicating that line dancing enabled these women to expand their repertoire of social activity, leading to positive reinforcements such as further community involvement, charitable work, inclusion in national sports events, self-expression, and personal development. The impact of line dancing plainly goes beyond the perceived physical benefits.     

Trends in senescent life expectancy

The distinction between senescent and non-senescent mortality proves to be very valuable for describing and analysing age patterns of death rates. Unfortunately, standard methods for estimating these mortality components are lacking. The first part of this paper discusses alternative methods for estimating background and senescent mortality among adults and proposes a simple approach based on death rates by causes of death. The second part examines trends in senescent life expectancy (i.e., the life expectancy implied by senescent mortality) and compares them with trends in conventional longevity indicators between 1960 and 2000 in a group of 17 developed countries with low mortality. Senescent life expectancy for females rises at an average rate of 1.54 years per decade between 1960 and 2000 in these countries. The shape of the distribution of senescent deaths by age remains relatively invariant while the entire distribution shifts over time to higher ages as longevity rises.