TEST FOR TREATMENT EFFECT BASED ON BINARY DATA WITH RANDOM SAMPLE SIZES

The problem of testing for treatment effect based on binary response data is considered, assuming that the sample size for each experimental unit and treatment combination is random. It is assumed that the sample size follows a distribution that belongs to a parametric family. The uniformly most powerful unbiased tests, which are equivalent to the likelihood ratio tests, are obtained when the probability of the sample size being zero is positive. For the situation where the sample sizes are always positive, the likelihood ratio tests are derived. These test procedures, which are unconditional on the random sample sizes, are useful even when the random sample sizes are not observed. Some examples are presented as illustration.     

Urban community in China: service, participation and development

With the rapid urbanisation and population growth in the cities, the People's Republic of China has recognised the importance of community development based on an ever-increasing demand for social services. In 1994, the Chinese government adopted community service as an alternative way of providing the supplemental safety net in urban areas. Along with this top-down approach, resident-initiated activities, participation and grassroots organisations at the community level are growing at an incredible pace. Using a case study, this study explores the context and aspects of community services, participation and community development in a Chinese urban community. Results indicate that China's reformed market economy and welfare system presses ordinary urban people to reconnect to the local community to ensure welfare security and quality of life. Community participation in China has rediscovered the path of community development and re-interpreted the top-down and bottom-up approaches in the context of community services.     

Leading Article: Welfare Development in the Midst of Political Uncertainty

On 1st July 1997 Hong Kong will be transformed from a British colony into a Special Administration Region (SAR) of the People's Republic of China. Although the Basic Law, a mini-constitution for the future SAR government, states that “Hong Kong's capitalist system and lifestyle will remain unchanged for 50 years after the establishment of the SAR”, changes are perceived to be inevitable, not least in respect of the welfare policies to be implemented by the future SAR government. Indeed, since the signing of the Joint Declaration in 1984 between the British and Chinese Governments on the future of Hong Kong, the existing Colonial Government has been enlarging its role in the social services and making relevant policies more responsive to the needs of the people. These reforms have largely been carried out in line with the democratization process which Hong Kong has been undergoing in recent years. To what extent will these changes in welfare policies continue after 1997? It is argued here that with the enlargement of democracy, and especially the establishment of political parties claiming to represent the interests of the people, it would no longer be possible for Hong Kong to return to residual-type welfare programmes. While it would be unlikely for Hong Kong to develop into a “welfare state”, the future development of social services in Hong Kong would probably command widest acceptance if policies keep in line with the prevalent welfare ideology which stresses, on the one hand, the self-reliance of the people and, on the other, the responsibility of government to look after weaker members.     

Chinese Statistics

This article points out that the development of statistics in China is a part of the modernization process. It reviews the scope and the quality of Chinese statistics and discusses the statistics of consumption and national income in particular. The future prospects of Chinese statistics are also indicated.     

Comparison of Robust Estimators of Standard Deviation in Normal Distributions Within the Context of Quality Control

Pitman criterion is used in simulation to determine the “closer” estimator of the standard deviation among selected choices. The initial simulation utilizes a standard normal distribution from which samples are taken of specific sizes. Popular and commonly used estimators of standard deviation are compared with the known population standard deviation in this study. Closeness criterion is calculated for each comparison and sample size. A secondary simulation applies the findings to variables control charts, in order to verify the ability of each estimator to identify out-of-control conditions.     

New Economy and New Social Policy in East and Southeast Asian Compact, Mature Economies: The Case of Hong Kong

In the 1970s, as the now compact, mature economies in East and Southeast Asia were industrializing, their governments had claimed that they saw no need for the kind of welfare programmes developed in Western “welfare states”. Notwithstanding this claim, a study of social welfare development in these economies in the last three decades, particularly when Hong Kong is taken as an example, shows that they have gone for universal social welfare, largely as a result of the growing prosperity and the rising expectations of the people. This trend has, however, been reversed since the start of the Asian financial crisis in the latter part of 1997, with the resultant slowing down of the economy, rising unemployment and surging fiscal deficits. Governments of the compact, mature economies in East and Southeast Asia found that they must rethink their social commitments and in order to return to balanced budgets, the former selective approach is now adopted by concentrating social welfare resources on the most needy people. While it is not in dispute that there is a close and positive relationship between industrialization and social welfare, the case of the compact, mature economies in East and Southeast Asia shows that as they are more vulnerable to world economic vicissitudes, the relationship may not be as steady as it has been in the Western industrial states.     

Outcome favorability in the link between leader–member exchange and organizational citizenship behavior: Procedural fairness climate matters

The study developed an integrated model of the relationship among leader–member exchange (LMX), outcome favorability, procedural fairness climate and employee organizational citizenship behavior (OCB). Using three-phrase multilevel data from multiple sources collected from 238 employees working with 42 supervisors at manufacturing firms in China, we found that (1) LMX was positively related to outcome favorability and OCB, (2) procedural fairness climate moderated the relationship between outcome favorability and OCB, and (3) the indirect effect of LMX on OCB (via outcome favorability) was stronger when procedural fairness climate was high rather than low. The study provides insight on the LMX–OCB relationship and the integration of LMX and fairness research.     

Gambling Involvement and Increased Risk of Gambling Problems

The opportunity to gamble has undergone rapid expansion with technology allowing for access to gambling products 24 h a day. This increased online availability challenges governments’ abilities to restrict access to gambling. Indeed, the ready access to multiple forms of gambling may potentially contribute to impaired control over urges for problem gamblers. The present study considered whether problem gamblers manifested a tendency to engage in multiple forms of gambling and identified forms of gambling which were more strongly related to problem gambling. In reanalyses of two surveys (Sample 1, N = 464, Sample 2, N = 1141), significant relationships accounting for between 11.3 and 13.5 % of the variance were found between the numbers of forms of gambling accessed and degree of problem. Participation in online poker, playing cards and sports wagering were linked to problem gambling. Access to multiple forms of gambling may pose difficulties for the tracking and control of gambling.     

Preventing economic hardship among Chinese elderly in Hong Kong

Over the next 20 years, Hong Kong will face a rapidly aging population as the number of older adults aged 65 or above increases to approximately 1.4 million by 2021, that is, 17% of the total population. In 2001, there were 1.2 million adults aged 45-59. To assess the differences between these middle-aged adults and the current cohort of older adults, we identified the challenges that Hong Kong society will face in meeting the financial needs of older adults in the coming two decades. In this paper, we examine the retirement economic status of three groups of older adults: those who are financially independent, those who are financially supported by their adult children or children-in-law, and those who are receiving welfare assistance. We describe the current situations of these groups, prevailing social policy, future trends, and recommend policies for tackling problem areas.