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51.
Modeling household fertility decisions with generalized Poisson regression   总被引:1,自引:1,他引:0  
This paper models household fertility decisions by using a generalized Poisson regression model. Since the fertility data used in the paper exhibit under-dispersion, the generalized Poisson regression model has statistical advantages over both standard Poisson and negative binomial regression models, and is suitable for analysis of count data that exhibit either over-dispersion or under-dispersion. The model is estimated by the method of maximum likelihood. Approximate tests for the dispersion and goodness-of-fit measures for comparing alternative models are discussed. Based on observations from the Panel Study of Income Dynamics of 1989 interviewing year, the empirical results support the fertility hypothesis of Becker and Lewis (1973). Received January 7, 1997 /Accepted April 3, 1997  相似文献   
52.
"This paper reopens the debate between Weekley (1988) and Rowsell (1989) over why pockets of depopulation have persisted within parts of rural Britain which have experienced net growth through counterurbanisation. It argues that Weekley has not fully appreciated the context for local population losses, namely the emergence of a new structural relationship between people, households, and dwellings, and the growing tension between production and consumption interests in rural locales. Moreover, the paper disputes claims that depopulation is triggered by the actions of either the landowner or the planner. Drawing on case study material informed by critical realism, it argues that planners and landowners have been drawn into an asymmetrical power relationship. This has tended to buttress landed interests and, in so doing, reproduce mechanisms which protect the less populous communities from growth and change."  相似文献   
53.
Theory and research have not kept pace with the growing interest in evaluating quality of mental health care, resulting in the use of unvalidated quality indicators. A framework for validating quality indicators is offered by which quality is viewed as the relationship between service structures, processes, and outcomes. Adoption of this framework will facilitate the measurement of quality using valid indicators and should be useful to agencies in their continuous quality improvement efforts. Valid information about the quality of mental health care services will help purchasers and consumers make more informed health care decisions.  相似文献   
54.
The purposes of this study were to examine the prevalence of gambling among youth, compare rates of gambling between 1992 and 1995, and determine what levels of gambling frequency may be considered common and uncommon. The two samples included 122,700 Minnesota public school students in the 6th, 9th, and 12th grades in 1992; and 75,900 9th and 12th grade students in 1995. Students were administered the Minnesota Student Survey, a 126-item, anonymous, self-administered, paper-and-pencil questionnaire that inquires about multiple content domains, including gambling behaviors. The same questionnaire, with minor revisions to the gambling items, was administered in both 1992 and 1995 to students in their classrooms by the Minnesota Department of Education. There were slight decreases in overall gambling rates from 1992 to 1995. The majority of students gambled at least once during the past year. However, most did not play any game on a weekly/daily rate and did not report any problems associated with their gambling. Gender, grade, and race effects were found for gambling frequency. Boys gambled more often than girls, and 9th and 12th grade students gambled more often than 6th grade students. Asian American and White students reported lower rates of gambling frequency than Mexican/Latin American, African American, and American Indian students. From a statistical standpoint (i.e., beyond the 97.7 percentile), it may be considered in the uncommon range for girls to play two or more games at a weekly/daily rate, and for boys to play four or more games at a weekly/daily rate. Variables associated with gambling frequency included antisocial behavior, gender, and alcohol use frequency. Although the finding that gambling did not increase from 1992 to 1995 is encouraging, this is the first generation of youth to be exposed to widespread accessability to gambling venues and gambling advertising and it will be important to continue monitoring the prevalence of youth gambling.  相似文献   
55.
"After a brief discussion of related studies of Thai youths' attitudes toward sexual activity, data from a 1988 national survey of young males (ages 15-24) about their family planning knowledge, attitudes, and practices are used to document the age pattern of sexual initiation, the prevalence of youths' encounters with commercial sex workers, the prevalence of their experience with non-commercial partners...and the degree to which the two patterns--commercial and noncommercial--are 'networked' because young men engage in both types of sexual activity. Finally, background characteristics of male youths that are associated with these patterns of sexual activity are examined."  相似文献   
56.
This article is a guide to over a hundred journal articles on strategic management in nonprofit organizations, published from 1977 to 1992 in nineteen leading general management or nonprofit journals. The guide provides brief summaries of articles, organized into widely accepted strategic management topic areas and research categories. The article indicates areas where substantial foundations of knowledge exist and where such bases are lacking. It distinguishes between works on general nonprofit management and those on empirical research.  相似文献   
57.
The impact of war on marriage, divorce, and birth rates in the United States from 1933 to 1986 is explored. The author concludes that "the involvement of the nation in military activities was accompanied by a decrease in marriage and birth rates but not by any change in divorce rates. Mobilization of the armed forces and demobilization had no discernible impact on divorce, marriage or birth rates."  相似文献   
58.
59.
The relationship between demographic changes and the social security system is explored. The focus is on the current situation in the Federal Republic of Germany, but consideration is also given to comparable developments in other developed countries. Emphasis is placed on how changes in the age distribution of modern populations affect the relative proportion of the productive and the dependent populations.  相似文献   
60.
In seeking a solution to its population problem, China, as a developing socialist country, has been making unremitting efforts to develop economy while controlling the rapid growth. The objective is to control rapid population growth so that population growth may be in keeping with socioeconomic development and commensurate with utilization of natural resources and environmental protection. In the past decade, and particularly since 1979, China has made much progress in developing economy and gained remarkable successes in controlling population growth. The natural population growth rate dropped to 1.15% in 1983, from 2.089% in 1973. Living standards have improved with a gradual annual increase of per capita income. All this proves that the policy of promoting family planning to control population growth along with planned economic development is correct. In China family planning is a basic state policy. The government has advocated the practice of "1 couple, 1 child" since 1979. This does not mean that 1 couple could have 1 child only in every case. The government provides guidance for the implementation of family planning programs in the light of specific conditions such as economic developments, cultural background, population structure, and the wishes of the people in different localities. The requirements are more flexible in rural than in urban areas and more so among the people of national minorities than among the people of the Han Nationality. In rural areas, couples who have actual difficulties and want to have 2 children may have a 2nd birth with planned spacing. In carrying out its family planning program, China has consistently adhered to the principle of integrating state guidance with the masses' voluntariness. The government has always emphasized the importance of encouraging the people's own initiatives, through publicity and education, which is the key link in implementing the family planning program.  相似文献   
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