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331.
Jancey J Lee A Howat P Clarke A Wang K Shilton T 《Journal of aging and physical activity》2007,15(2):152-165
This study investigated attrition in a 6-month physical activity intervention for older adults. The program was based on the social-cognitive theory incorporating self-efficacy factors. Two hundred forty-eight insufficiently active 65- to 74-year-olds were recruited from the Australian federal electoral roll. The intervention comprised walking and strength and flexibility exercises and was conducted in 30 local neighborhoods where the participants resided. Characteristics of individuals lost to attrition (n = 86, 35%) were compared with those of program completers (n = 162, 65%). Logistic-regression analysis showed that those lost to attrition came from areas of lower socioeconomic status, were overweight and less physically active, and had lower walking self-efficacy scores and higher loneliness scores. The results suggest that early assessment of these characteristics should be undertaken to identify individuals at risk of attrition, to improve retention, and to avoid potential bias. 相似文献
332.
Robinson J. Gregory West Kirsten K. Adlakha Arjun 《Population research and policy review》2002,21(1-2):19-38
Since the 1960 Census, Demographic Analysis (DA) has been used by the Census Bureau to evaluate the coverage of the population. Administrative statistics on births, deaths, immigration and Medicare enrollments as well as estimates of legal emigration and net undocumented immigration are used to produce demographic analysis estimates of the population for the census date. These estimates are compared to the Census 2000 data to evaluate coverage in the census. The results are also compared to measures of undercount obtained from dual system estimation. The DA measures substantial reduction in net undercount in Census 2000 compared to 1990. The reductions occur among all demographic categories: all broad age groups, males and females, Blacks and Non-Blacks. 相似文献
333.
A central theme of Beck's argument in The Brave New World of Work (2000) is that labour markets in the developed world are taking on some of the core characteristics that have been associated with less developed labour markets such as employment insecurity, informality and precarity. A process he refers to as Brazilianisation. In this paper we consider whether Beck's thesis can help us understand changes in youth transitions in Australia and the UK by developing a comparative analysis of processes of casualisation in the youth labour markets of the two countries. We assess the extent to which precarious labour market biographies have become entrenched and represent modern forms of engagement with the labour market. While evidence is presented to suggest that young people's labour market experiences have been affected by a trend towards greater casualisation, we argue that the changes are having the greatest impact on those in the weakest positions: in both countries women are more likely to be affected than men and casualisation is most evident in the lowest skilled occupations. 相似文献
334.
This study explored relationships among young adults’ wealth and entrepreneurial activities with emphasis on how these relationships differed among racial and ethnic groups. Using data from the 1997 National Longitudinal Survey of Youth, results indicated that young adults’ (N = 8984) higher accumulated amounts of wealth were associated with pursuing self-employment at higher rates; however, differences emerged when the associations were explored with various types of wealth and within racial and ethnic groups. Black young adults’ greater debt and net worth were associated with their increased likelihoods of self-employment. Among Latino/a young adults, greater liquid assets and net worth were associated with increased likelihoods of self-employment. Wealth was unrelated to white young adults’ self-employment. Wealth appeared to play an outsized role in the self-employment of black and Latino/a young adults compared to that of their white counterparts. In other words, racial and ethnic minority young adults may have a heavier burden for generating their own capital to embark on entrepreneurial activities when mainstream credit markets are unresponsive or inaccessible. Policy implications are discussed. 相似文献
335.
The purpose of this article is to provide a fuller and more integrated understanding of poverty based on the results of a nation wide participatory study recently completed in South Africa. A surprisingly consistent view of poverty emerges from the study which includes social isolation, malnourished children, crowded homes, the use of basic energy sources, no employment, and fragmented households. A clear image of what results from extreme poverty also emerges comprising continuous ill health, arduous and often hazardous work for virtually no income, no power to influence change, and high levels of anxiety and stress. The article concludes that conventional definitions of poverty do not fully describe the experience of poverty as analysed by the poor themselves. Instead, the multidimensional nature of poverty suggests that three basic concepts would be useful in any analysis of extent, nature and persistence of poverty. These are sufficiency, access and vulnerability. 相似文献
336.
Learning to walk expands infants’ access to the physical environment and prompts changes in their communicative behaviors. However, little is known about whether walking also shapes infants’ proximity to their adult social partners during everyday activities at home. Here we followed 89 infants (42 boys, 47 girls; 92% White, not Hispanic or Latino) longitudinally and documented connections between infant locomotion and infant-adult proximity on two timescales: (1) across developmental time, by comparing data from a session when infants could only crawl to a later session when they could walk (M walk onset = 12.15 months, range = 8-15); and (2) in real time, by testing whether the amount of time that infants spent in motion (regardless of their locomotor status) related to their interpersonal distance to adults. The developmental transition to walking corresponded to a significant, but modest, decrease in infant-adult proximity. Infants’ moment-to-moment locomotion, however, was strongly related to patterns of interpersonal distance: infants who spent more time in motion spent less time near adults and instigated more proximity transitions, resulting in shorter and more dispersed bouts of proximity throughout sessions. Findings shed new light on how infants’ motor achievements can reverberate across other domains of development, and how changes in infant development that researchers often observe over months arise from infants’ moment-to-moment experiences. 相似文献