Reliability and Validity of the IPAQ-L in a Sample of Hong Kong Urban Older Adults: Does Neighborhood of Residence Matter?

This study examined reliability and validity of the Chinese version of the International Physical Activity Questionnaire-Long Form (IPAQ-LC) in Chinese seniors, including moderating effects of neighborhood walkability and socioeconomic status (SES) on reliability and validity. The IPAQ-LC was interviewer-administered (n = 96), accelerometer and 7-day walk-diary data were collected (n = 94), and the IPAC-LC was readministered (N = 92). Acceptable reliability was found for all measures of physical activity (PA) overall and across different types of neighborhood. Participants from highly walkable neighborhoods were more reliable at estimating walking for transport. Participants from low-SES areas were less reliable at estimating leisure-time PA and sitting but more reliable at estimating transport-related walking. IPAQ-LC walking was significantly related to light- but not moderate-intensity accelerometry-based PA. It was moderately to strongly related to a 7-day diary of walking. The data imply slow-paced walking, probably due to age, climate, and terrain. The findings suggest that the IPAQ-LC's reliability and validity are acceptable in Chinese seniors.     

Increase in common longevity and the compression of mortality: the case of Japan

This study shows a strong increase in the modal age at death (M) in Japan over a period of 50 calendar years, accompanied by a clear decrease in the standard deviation of ages at death above M (SD(M+)) until the 1990s for men and the mid-1980s for women. For the most recent periods SD(M+) appears to have stopped decreasing, even though M has continued to increase linearly. This stagnation in SD(M+) has been accompanied by stagnation in q(M). The number of deaths at M (d(M)) and the number of deaths at and above M (d(M+)) have increased, but significantly more slowly since the period 1975-79. Since the 1980s an acceleration in the increase of M+kSD(M+), our indicator of the longest life durations, has been essentially due to the pause in SD(M+). Our data do not suggest that we are approaching an upper limit in human longevity.     

Differential Impacts of Stressors on Sense of Belonging

A number of personal and familial stressors are supposedly stressful. However, their individual impacts on the person’s sense of belonging remain largely uncharted. The study thereby examines the impacts of the stressors in general and in relation to personal and familial background characteristics. Such examination adheres to the perspective of resource theory, which envisions that resources are salutary and relieving the stress of stressors by compensating for resource loss. A survey of 1,200 residents in Taiwan provided data for the examination. Results revealed that work-to-family conflict and family disbanding were two stressors weakening sense of belonging. Furthermore, the former stressor was more stressful to people of higher social class, whereas the latter stressor was more stressful to people with higher family income but lower education. The results imply certain ways to employ resources properly to tackle the stress of stressors.     

Research Note—Globalization and Social Work: Influencing Practice Through Continuing Education

This study determined the effect of a continuing education (CE) program on increasing social workers’ knowledge about global issues and subsequently influencing decisions for future practice. Thirty-eight participants took a CE course (3-session face-to-face or 1-month online) on global issues. Social Work Practitioner Globalization Survey was used to test participants’ (1) knowledge about globalization and global references, (2) belief about the importance of globalization for making practice decisions, and (3) intent to seek global knowledge in the future. Pre- and postcourse data from 32 respondents showed increases in knowledge, belief, and intended action toward the use of globalization knowledge in social work practice. Findings help social work educators justify and plan curricula that infuse globalization and global issues as curriculum components.     

Parent–child relationships,friendship networks,and developmental outcomes of economically disadvantaged youth in Hong Kong

This research investigates factors conducive to the thriving of economically disadvantaged young people in Hong Kong. In particular, we examine ways in which the parent–child relationship and friendship networks, as the principal sources of support during the transition from childhood to adulthood, influence the developmental outcomes of this group of young people with regard to their mental health, positive identity, behavioral adjustment, resilience and academic achievement. Based on a survey of 479 young people recruited from community-based youth-service centers located in different districts of Hong Kong, the results of the present research support the hypotheses that parent–child relationships and friendship networks have significant positive effects on youth development among low-income young people. Our results also show that, when compared with friendship networks, the parent–child relationship is a stronger predictor of youth development, that is, a stronger parent–child relationship tends to correspond to a better developmental outcome. Moreover, our research provides empirical evidence regarding the influence that parents can have on shaping the quality of young people's friendship networks. The implications of our findings, both for future research and for service delivery to promote the well-being of economically disadvantaged young people, are discussed.     

A note on confidence bounds after fixed-sequence multiple tests

We are concerned with the problem of estimating the treatment effects at the effective doses in a dose-finding study. Under monotone dose-response, the effective doses can be identified through the estimation of the minimum effective dose, for which there is an extensive set of statistical tools. In particular, when a fixed-sequence multiple testing procedure is used to estimate the minimum effective dose, Hsu and Berger (1999) show that the confidence lower bounds for the treatment effects can be constructed without the need to adjust for multiplicity. Their method, called the dose-response method, is simple to use, but does not account for the magnitude of the observed treatment effects. As a result, the dose-response method will estimate the treatment effects at effective doses with confidence bounds invariably identical to the hypothesized value. In this paper, we propose an error-splitting method as a variant of the dose-response method to construct confidence bounds at the identified effective doses after a fixed-sequence multiple testing procedure. Our proposed method has the virtue of simplicity as in the dose-response method, preserves the nominal coverage probability, and provides sharper bounds than the dose-response method in most cases.     

Lag Order and Critical Values of the Augmented Dickey–Fuller Test

Response surface analysis is used to obtain approximate finite-sample critical values for the augmented Dickey–Fuller (ADF) test. Previous studies estimating the critical values for the test have generally ignored their possible dependence on the lag order. This study shows that the lag order, in addition to the sample size, can affect the finite-sample behavior of the test. The result points to the importance of correcting for the effect of lag order in applying the ADF test.     

Impacts of Class on Hong Kong People's Well-Being

Whereas class theory and research have offered evidence showing the significant effect of class on the individual's well-being, some researchers think that class has no impact on people in modern society because of reduced inequality in education and profession. In such a modern society as Hong Kong,further arguments suggest that people have vague images of class. This controversy may arise because of the failure to operationalize class. To amend this shortcoming, this study operationalized class by using Wright's (1985) definition. With data from 138 marital couples, it tested a causal model predicting the husband's and wife's well-being by class, through the mediation of problem-solving confidence, received social support, work alienation, pleasant and stressful life events, and income. Analysis via structural equation modeling indicated that well-being was significantly associated with a higher class position. That work alienation mediated the relationship between class and received social support, problem-solving confidence, and well-being supports the significance of class theory.