Partial Partial Likelihood

The maximum likelihood and maximum partial likelihood approaches to the proportional hazards model are unified. The purpose is to give a general approach to the analysis of the proportional hazards model, whether the baseline distribution is absolutely continuous, discrete, or a mixture. The advantage is that heavily tied data will be analyzed with a discrete time model, while data with no ties is analyzed with ordinary Cox regression. Data sets in between are treated by a compromise between the discrete time model and Efron's approach to tied data in survival analysis, and the transitions between modes are automatic. A simulation study is conducted comparing the proposed approach to standard methods of handling ties. A recent suggestion, that revives Breslow's approach to tied data, is finally discussed.     

The reproduction of gender: housework and attitudes towards gender equality in the home among Swedish boys and girls

The housework Swedish girls and boys age 10 to 18 do, and their attitudes towards gender equality in the home are studied. One aim is to see whether the work children do is gendered and if so, whether they follow their parents', often gendered, pattern in housework. A second aim is to see whether children's attitudes are influenced by their parents' attitudes and practices. When it comes to issues like these, Sweden is of special interest because in 1995, Sweden was appointed the most gender equal country in the world by the United Nations. The data used were the Swedish Child Level of Living Survey 2000 (see http://www.sofi.su.se/LNU2000/english.htm), a data set that includes extensive first-hand information from both children and their parents. The results indicate that girls and boys in two-parent families are more prone to engage in gender atypical work the more their parent of the same sex engages in this kind of work. The fact that girls still do more housework than boys in all families independent of, among other things, the parental division of housework and the mother's educational level indicates that housework to some extent signifies gender also to children. However, no clear relation is found between the parents' division of work and the child's attitude towards gender equality in the home. Neither is there any clear relation between the parents' attitude towards gender equality in the home and the children's attitude to the same topic.     

Building collaboration between school and parents: issues for school social workers and parents whose young children exhibit violent behaviour at school

This research explores the perceptions of 60 parents whose children, aged from three to nine, had been involved in bullying, as defined under the Safe Schools Act and the Code of Conduct. Some of these children had been suspended from school, while others were potential candidates for suspension. These parents were recruited from Ottawa's two French-language school boards to participate in qualitative interviews between June 2000 and June 2002. The aim of this research was to cast new light on the perceptions of parents and schools with regard to their relationships, and on the role of school social workers in maintaining and enhancing collaborative partnerships.

The desire of some parents to be involved in the decisions concerning remedial action taken to address their child's aggressive behaviour touched a raw nerve in some schools. Nonetheless, when schools and parents ultimately recognize the daily challenges that both parties face, and a shared plan of action develops therein, the path to effective collaboration becomes clear. Early intervention on the part of school social workers gives them an edge in their efforts as mediators. They seize every opportunity to initiate different collaborative approaches between schools and parents, so that the issue of bullying can be handled in a more respectful way for everyone.     

Triangulation of self-report and investigator-rated coping indices as predictors of psychological stress: a longitudinal investigation among public utility workers

The aims of the present study were to: (a) determine if self-reported coping is consistent with conceptually-equivalent investigator-rated coping indices; (b) establish which types of coping are associated with psychological stress; and (c) establish whether using investigator-rated in addition to self-report coping indices to predict stress outcomes is beneficial in a real life context of worker's stressors. To fulfil these aims, a longitudinal investigation was conducted among 40 Canadian workers from the public utility sector. Results from semi-structured interviews about their worst current stressors revealed main effects for some coping types as assessed with investigator-rated indices, whereas no main effects were observed with self-report coping indices. Still, self-report and investigator-rated coping indices together significantly predicted follow-up stress. Psychological stress was most strongly predicted by investigator-rated behavioural approach. While self-report cognitive approach predicted lower psychological stress, investigator-rated cognitive approach predicted greater stress. Findings underline the importance of using both types of coping indices to predict outcome.     

Targeted estimation of state occupation probabilities for the non-Markov illness-death model

We use semi-parametric efficiency theory to derive a class of estimators for the state occupation probabilities of the continuous-time irreversible illness-death model. We consider both the setting with and without additional baseline information available, where we impose no specific functional form on the intensity functions of the model. We show that any estimator in the class is asymptotically linear under suitable assumptions about the estimators of the intensity functions. In particular, the assumptions are weak enough to allow the use of data-adaptive methods, which is important for making the identifying assumption of coarsening at random plausible in realistic settings. We suggest a flexible method for estimating the transition intensity functions of the illness-death model based on penalized Poisson regression. We apply this method to estimate the nuisance parameters of an illness-death model in a simulation study and a real-world application.     

Adolescents at risk of mental health problems in the COVID-19 pandemic: A prospective population-based study of the effects of government mandates and school closures

There is increasing evidence that the COVID-19 pandemic has had substantial mental health impacts for adolescents. Yet, few definitive studies have investigated which adolescents were at higher risk of poor mental health and well-being during the pandemic. Data were drawn from the Childhood to Adolescence Transition Study, a prospective cohort study of students in Australia (N = 1211). Prevalence of mental health outcomes (depressive symptoms, anxiety symptoms, self-harm and good subjective well-being) was estimated in school Years 5–12, where Years 11 (2020) and 12 (2021) coincided with the pandemic. The age- and sex-adjusted relative risk of each mental health outcome for each priority group during the pandemic were estimated. During the pandemic, over 50% of study participants reported depressive symptoms, and one quarter reported anxiety symptoms. There was a decrease in good subjective well-being compared with pre-pandemic years, while self-harm prevalence remained similar. History of mental health problems, school disengagement and frequent peer victimisation increased the risk of experiencing mental health problems during the pandemic. Schools play a central role in maintaining the mental health and good subjective well-being of students, and this is particularly important during periods of social disruption, such as the COVID-19 pandemic.     

The sound of liminality: MHD's afro trap,affective listening,and the (re)invention of Afropean identities in France

This article is an exploration of the world making capacities of afro trap. Through an extended case study of MHD's discography, I ask what can be learnt about the liminal experiences of postcolonial black citizens, or Afropean citizens, in France, by listening to popular music. I argue that through embracing, reinventing, and (re)producing familiar Afropean soundscapes, MHD claims and creates from his liminal subject position. Going against the assumption that Frenchness and blackness are always mutually exclusive and in tension, this music sonically proposes a way of being otherwise in France, stemming from this liminality. I see in what I call ‘the sound of liminality’ an instance of ‘queering ethnicity,’ one which channels the affective capacities of sound. I propose affective listening as a method that, incorporating autoethnography to consider critical listening positionality, facilitates a renewed attention to sound as an object of sociological inquiry.     

Bayesian modelling of effects of prenatal alcohol exposure on child cognition based on data from multiple cohorts

High levels of prenatal alcohol exposure (PAE) result in significant cognitive deficits in children, but the exact nature of the dose-response relationship is less well understood. To investigate this relationship, data were assembled from six longitudinal birth cohort studies examining the effects of PAE on cognitive outcomes from early school age through adolescence. Structural equation models (SEMs) are a natural approach to consider, because of the way they conceptualise multiple observed outcomes as relating to an underlying latent variable of interest, which can then be modelled as a function of exposure and other predictors of interest. However, conventional SEMs could not be fitted in this context because slightly different outcome measures were used in the six studies. In this paper we propose a multi-group Bayesian SEM that maps the unobserved cognition variable to a broad range of observed outcomes. The relation between these variables and PAE is then examined while controlling for potential confounders via propensity score adjustment. By examining different possible dose-response functions, the proposed framework is used to investigate whether there is a threshold PAE level that results in minimal cognitive deficit.