RACIAL DIFFERENCES IN ACCESS TO HIERARCHICAL AUTHORITY

Using national data from the General Social Surveys, I examined race differences in the magnitude of the black-white gap among men in the odds of gaining access to positions of hierarchical authority at work and possible changes in this gap over the period 1972–1994. A test of William Julius Wilson's (1978) thesis of "the declining significance of race'and human capital/structural explanations for racial differences in access to hierarchical authority show that (1) blacks are less likely to be in the highest levels of job authority net of human capital, occupational location, family status, and region of residence, but there are fewer racial differences in access to lower positions of authority, and (2) blacks receive a lower authority return to their levels of education compared to whites. However, separate analyses based on subsamples of men living and working in large and small cities suggest that the racial gap in access to high authority and in the amount of authority returns to education is present more so among men living in large cities than small cities; but the racial gap in men's access to positions of high authority in small cities increased over the twenty-two-year period covered by the data. I discuss the implications of these findings for the persistent role of race in determining the life chances of black and white men.     

Optimal design for epidemiological studies subject to designed missingness

In large epidemiological studies, budgetary or logistical constraints will typically preclude study investigators from measuring all exposures, covariates and outcomes of interest on all study subjects. We develop a flexible theoretical framework that incorporates a number of familiar designs such as case control and cohort studies, as well as multistage sampling designs. Our framework also allows for designed missingness and includes the option for outcome dependent designs. Our formulation is based on maximum likelihood and generalizes well known results for inference with missing data to the multistage setting. A variety of techniques are applied to streamline the computation of the Hessian matrix for these designs, facilitating the development of an efficient software tool to implement a wide variety of designs.     

Flexible estimates of tumour incidence for intermediately lethal tumours in a typical long-term animal bioassay

The estimation of the incidence of tumours in an animal carcinogenicity study is complicated by the occult nature of the tumours involved (i.e. tumours are not observable before an animal's death). Also, the lethality of tumours is generally unknown, making the tumour incidence function non-identifiable without interim sacrifices, cause-of-death data or modelling assumptions. Although Kaplan–Meier curves for overall survival are typically displayed, obtaining analogous plots for tumour incidence generally requires fairly elaborate model fitting. We present a case-study of tetrafluoroethylene to illustrate a simple method for estimating the incidence of tumours as a function of more easily estimable components. One of the components, tumour prevalence, is modelled by using a generalized additive model, which leads to estimates that are more flexible than those derived under the usual parametric models. A multiplicative assumption for tumour lethality allows for the incorporation of concomitant information, such as the size of tumours. Our approach requires only terminal sacrifice data although additional sacrifice data are easily accommodated. Simulations are used to illustrate the estimator proposed and to evaluate its properties. The method also yields a simple summary measure of tumour lethality, which can be helpful in interpreting the results of a study.     

The “Peculiar Eclipsing” of Women in Sociological Theory: Moving from Nearly Total to Partial

This paper revisits the observation made by Ward and Grant (Current Perspective in Social Theory 11:117–140, 1991) that there had been a “peculiar eclipsing” of women in sociological theory. It provides longitudinal studies of women’s participation and recognition in three conventional outlets for sociological theorizing: the theory section of the American Sociological Association (ASA); sociological theory textbooks; and sociological theory journals. It finds that the percentage of ASA Theory Section members who were women increased from 12% in 1982 to 31% in 2008, but is not nearly as high as the 53% in all ASA sections taken together; that women’s recognition in sociological theory textbooks grew, more between the 1980s and the 2000s than between the 1960s and the 1980s, undoubtedly reflecting the increasing respectability of feminist theory within the profession; and that women’s relative participation as authors in sociology theory journals increased from the 1980s to the 2000s by about 33%, but nowhere near as much as their participation as authors in the American Sociological Review, where their relative participation in the 2000s was more than three times what it had been in the 1980s. We speculate that, given women’s increasing leadership roles in both the Theory section and the theory journals, women may be using less conventional outlets for their theorizing than is offered by either the section or the journals.     

The Mexican Drug War and Early-Life Health: The Impact of Violent Crime on Birth Outcomes

This study examines the relationship between exposure to violent crime in utero and birth weight using longitudinal data from a household survey conducted in Mexico. Controlling for selective migration and fertility, the results suggest that early gestational exposure to the recent escalation of the Mexican Drug War is associated with a substantial decrease in birth weight. This association is especially pronounced among children born to mothers of low socioeconomic status and among children born to mothers who score poorly on a mental health index.     

Midwives’ personal use of complementary and alternative medicine (CAM) influences their recommendations to women experiencing a post-date pregnancy

Complementary and Alternative Medicine (CAM) have increasingly been used by pregnant women with a steady rise in interest by midwives. Literature describing CAM and self-help options midwives recommend to women experiencing a post-date pregnancy is sparse. This study aimed to investigate if Australian midwives’ personal CAM use impacts on discussions and recommendations of CAM/Self-help strategies.