Migration bias in indirect estimates of regional childhood mortality levels

Demographers often use Brass‐style indirect methods to obtain childhood mortality estimates for regions within developing countries. Regional populations are not closed to migration, however, and mortality reports of women resident in a certain region on the survey date may contain information on events and exposure that occurred elsewhere as the mother migrated. Including this “imported”; mortality information may cause significant bias in regional estimates. In this paper the authors: (1) investigate the possible magnitude of migration bias using a multiregional simulation model, (2) propose a modification to standard methods which should reduce bias in many circumstances, and (3) apply the modified technique to data from Brazil's 1980 Census. We find that migration bias can indeed be significant, and that in the specific case of São Paulo state, imported mortality information may result in overestimates of local mortality levels of 10–15% when using Brass‐style methods.     

Aboriginal women in rural Australia; a small study of infant feeding behaviour

BackgroundAboriginal women in rural areas have lower rates of breastfeeding than Australian averages. The reasons for this are poorly understood. Aboriginal people experience higher morbidity and increased rates of chronic disease throughout the life cycle. The protective effects of sustained breastfeeding could benefit rural Aboriginal communities.ObjectiveTo explore the factors impacting upon infant feeding choices in a rural Aboriginal Community.MethodsSemi-structured interviews were conducted with eight Aboriginal rural dwelling first time mothers. These women received a continuity of midwife and Aboriginal Health Worker model of care. Interviews were also undertaken with five Aboriginal Health Workers and two Aboriginal community breastfeeding champions. The analysis was integrated with a conventional literature review and was further developed and illustrated with historical literature. Indigenist methodology guided the study design, analysis and the dissemination of results.ResultsThree key themes were identified. These were “I’m doing the best thing for…” which encompasses the motivations underpinning infant feeding decisions; “this is what I know…” which explores individual and community knowledge regarding infant feeding; and “a safe place to feed” identifying the barriers that negative societal messages pose for women as they make infant feeding decisions. It appears loss of family and community breastfeeding knowledge resulting from colonisation still influences the Aboriginal women of today.DiscussionAboriginal women value and trust knowledge which is passed to them from extended family members and women within their Community. Cultural, historical and socioeconomic factors all strongly influence the infant feeding decisions of individuals in this study.ConclusionsEfforts to normalise breastfeeding in the culture of rural dwelling Aboriginal women and their supporting community appear to be necessary and may promote breastfeeding more effectively than optimal professional care of individuals can do.     

The assessment of parental stress and support in the neonatal intensive care unit using the Parent Stress Scale – Neonatal Intensive Care Unit

ProblemParental stress in the neonatal intensive care unit (NICU) has been reported, however identifying modifiable stress factors and looking for demographic parent factors related to stress has not been well researched.AimThis study aims to identify the most stressful elements for parents in the neonatal intensive care unit.MethodsParents of babies in an Australian neonatal intensive care unit (N = 73) completed both the Parent Stress Scale – Neonatal Intensive Care Unit and a survey of parent and baby demographic and support experience variables (Parent Survey) over an 18-month period.FindingsOlder parental age, very premature birth and twin birth were significantly associated with a higher Parent Stress Scale – Neonatal Intensive Care Unit score. Having a high score in the Relationship and Parental Role scale was strongly associated with attendance at the parent support group.ConclusionThese results indicate the variables associated with stress and this knowledge can be used by teams within hospitals to provide better supportive emotional care for parents.     

Single-parent households and mortality among children and youth

Although many studies have examined associations between family structure and child outcomes, few have considered how the increase in single-parent households since the 1960s may have affected child mortality rates. We examined state-level changes in the percentage of children living with single parents between 1968 and 2010 and state-level trends in mortality among children and youth (age 19 or younger) in the United States. Regression models with state and year fixed effects revealed that increases in single parenthood were associated with small increments in accidental deaths and homicides.     

Social learning about levels of perinatal and infant mortality in Niakhar,Senegal

How individuals develop perceptions concerning the risk of infant and child mortality has important consequences for fertility and demographic transition theory and for understanding broader processes of social learning. The role of learning through social interaction in shaping demographic phenomena has been the subject of intense research in the last decade. Much previous research however has been hampered by inadequate measures of individuals’ personal networks, the proximal context in which learning takes place. Using pilot data employing an innovative social network design in conjunction with demographic surveillance data from Niakhar, Senegal, this research models perception of change in the level of infant mortality over time as a function of the experience of social network associates with perinatal and infant mortality. Results suggest relatively strong effects of network members’ mortality experience controlling for own experiences of child mortality as well as neighborhood and community levels of infant mortality among other controls.     

What Impact Do Contextual Variables Have on the Changing Geography of Mortality in Italy?

Using data for 94 provinces, three periods (1971–1973, 1981–1983 and 1991–1993), and for men and women, we present an interesting picture of the geography of adult and elderly mortality by cause of death in Italy. This picture brings into focus the North/South gap that has yet again emerged, this time in gender differences in mortality. Particular attention is given to mortality from those causes that would appear to depend on the geographical context and that have a greater role to play in overall mortality differences. We then define which causes of death have changed the geographic pattern in the period considered. Lastly we study the relationship between mortality by cause and socio-economic, health care, environmental, cultural, and nutritional variables. This revised version was published online in July 2006 with corrections to the Cover Date.     

Foster Caregiver Motivation and Infant Attachment: How do Reasons for Fostering Affect Relationships?

This study reports the results of the effects of types of caregiver motivation to foster parent on the security of attachment of infants in care. Using the Motivations for Foster Parenting Inventory and the Ainsworth Strange Situation Procedure, the differences in motivation of kin and non-kin caregivers and the effects of motivation on security of attachment of 46 infants is reported. Result found that motivations to foster, such as the desire to increase family size, and social concern for the community, were significant predictors for secure attachment; while reasons for fostering such as spiritual expression, adoption, and replacement of a grown child, were predictors of insecure attachment. Research and practice implications are discussed. Susan A. Cole is an Assistant Professor, School of Social Work, University of Illinois-Urbana-Champaign.     

论南昌起义期间中国共产党的统战工作

南昌起义期间,中国共产党为挽救革命,确立了仍打“国民党旗帜”,实行与国民党及一切真正革命分子“合作”的统战原则,并努力在政治和军事领域内与国民党进行合作。中国共产党此阶段政治领域的统战工作为南昌起义的成功提供了有利条件;军事领域内的统战虽有失误之处,但积极作用仍是主流。     

Work stress and attentional difficulties: An initial study on burnout and cognitive failures

Professional burnout is a stress-related disorder, having mental exhaustion due to work stress as its most important characteristic. Burned out individuals also often complain about attentional problems. However, it is currently not clear whether such complaints are based on true cognitive deficits or whether they merely reflect the way burned out individuals rate their own cognitive performance. To confirm the cognitive complaints we used a cognitive failure questionnaire (CFQ) to assess the level of self-reported attentional difficulties in daily life. We also measured performance on tasks of sustained attention and response inhibition (the SART and the Bourdon-Wiersma Test). We compared three groups: (1) a group of 'burned out' individuals (n=13) who stopped working due to their symptoms and sought professional treatment; (2) teachers at a vocational training institute (n=16) who reported high levels of burnout symptoms but continued to work; and (3) teachers from the same institute (n=14) who reported no burnout symptoms. The level of burnout symptoms was found to be significantly related to the number of cognitive failures in daily life, and to inhibition errors and performance variability in the attentional tasks. To our knowledge, explicit tests of objective cognitive deficits in burned out individuals have not been conducted before. Consequently, this is the first study to indicate that burnout is associated with difficulties in voluntary control over attention and that the level of such difficulties varies with the severity of burnout symptoms.     

Why Reduced-Form Regression Models of Health Effects Versus Exposures Should Not Replace QRA: Livestock Production and Infant Mortality as an Example

Do pollution emissions from livestock operations increase infant mortality rate (IMR)? A recent regression analysis of changes in IMR against changes in aggregate “animal units” (a weighted sum of cattle, pig, and poultry numbers) over time, for counties throughout the United States, suggested the provocative conclusion that they do: “[A] doubling of production leads to a 7.4% increase in infant mortality.” Yet, we find that regressing IMR changes against changes in specific components of “animal units” (cattle, pigs, and broilers) at the state level reveals statistically significant negative associations between changes in livestock production (especially, cattle production) and changes in IMR. We conclude that statistical associations between livestock variables and IMR variables are very sensitive to modeling choices (e.g., selection of explanatory variables, and use of specific animal types vs. aggregate “animal units). Such associations, whether positive or negative, do not warrant causal interpretation. We suggest that standard methods of quantitative risk assessment (QRA), including emissions release (source) models, fate and transport modeling, exposure assessment, and dose-response modeling, really are important—and indeed, perhaps, essential—for drawing valid causal inferences about health effects of exposures to guide sound, well-informed public health risk management policy. Reduced-form regression models, which skip most or all of these steps, can only quantify statistical associations (which may be due to model specification, variable selection, residual confounding, or other noncausal factors). Sound risk management requires the extra work needed to identify and model valid causal relations.