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.     

A New Goodness-of-Fit Test for Censored Data with an Application in Monitoring Processes

In this article, we propose a new goodness-of-fit test for Type I or Type II censored samples from a completely specified distribution. This test is a generalization of Michael's test for censored data, which is based on the empirical distribution and a variance stabilizing transformation. Using Monte Carlo methods, the distributions of the test statistics are analyzed under the null hypothesis. Tables of quantiles of these statistics are also provided. The power of the proposed test is studied and compared to that of other well-known tests also using simulation. The proposed test is more powerful in most of the considered cases. Acceptance regions for the PP, QQ, and Michael's stabilized probability plots are derived, which enable one to visualize which data contribute to the decision of rejecting the null hypothesis. Finally, an application in quality control is presented as illustration.     

Property rights and the gender distribution of wealth in Ecuador, Ghana and India

Women’s ability to accumulate wealth is often attributed to whether they have property rights; i.e., a legal personality to own and manage property. In this paper we argue that basic property rights are insufficient; whether women are able to accumulate wealth also depends upon the marital and inheritance regimes in particular contexts. Drawing upon surveys which collected individual level ownership data in Ecuador, Ghana and the state of Karnataka in India, we estimate married women’s share of couple wealth and relate it to how assets are owned within marriage as well as to different inheritance regimes and practices. In Ecuador, married women own 44 %, in Ghana, 19 %, and in Karnataka, 9 % of couple wealth. Ecuador is characterized by the partial community property regime in marriage while inheritance laws provide for all children, irrespective of sex, to be treated equally, norms that are largely followed in practice. In contrast, Ghana and India are characterized by the separation of property regime which does not recognize wives’ contribution to the formation of marital property, and by inheritance practices that are strongly male biased. Reforming marital and inheritance regimes must remain a top priority if gender economic equality is to be attained.     

A new geometric first-order integer-valued autoregressive (NGINAR(1)) process

A new stationary first-order integer-valued autoregressive process with geometric marginal distributions is introduced based on negative binomial thinning. Some properties of the process are established. Estimators of the parameters of the process are obtained using the methods of conditional least squares, Yule–Walker and maximum likelihood. Also, the asymptotic properties of the estimators are derived involving their distributions. Some numerical results of the estimators are presented with a discussion to the obtained results. Real data are used and a possible application is discussed.     

Return to Education and the Changing Role of Credentials in the Croatian Labor Market

The countries of Central and Eastern Europe experienced a rapid increase of return to education with the advent of the transition. We look at the dynamics of wage premiums in Croatia and estimate how much the return to education has changed between 1996 and 2004 on the basis of labor force survey data. We also extend the paper in order to address additional features of the wage structure, such as non-linearities in the return to education associated with attainment of credentials. We find that contrary to most transition countries, premiums for education in Croatia began to grow only after the mid 1990s. However, by 2004, they reached the levels of premiums found in other transition countries and advanced market economies, thus creating market incentives for investment in education. We also find that major part of this higher rate of return came through higher return to credentials.

The potential of Web sites as a relationship building tool for charitable fundraising NPOs

The Internet and especially the new challenges within Web 2.0 provide organizations with the possibility of encouraging two-way communication and engaging publics in dialogue. Charitable fundraising nonprofit organizations (NPOs) can particularly benefit from the Web's relationship building potential. This study aims to explore the potential of Web sites as an online-communication tool of Swiss NPOs. Via content analysis, the Web sites of 134 Swiss charitable fundraising NPOs were examined in order to point out how those organizations are using the Web to create dialogic relationships with their most important stakeholder groups, which are potential donors and the media. Results indicate that the potential of the Internet for dialogic communication is not used efficiently by most NPOs. Nevertheless, NPOs seem to be acknowledging the importance of engaging publics in dialogue, as most of them replied to information requests from potential donors and the media.¹