SAMPLE SIZE FOR TWO INDEPENDENT PROPORTIONS: A REVIEW

This paper reviews methods for determining sample sizes when inference is required on the difference between two proportions from independent samples. The sample sizes for Fisher's exact test are generally regarded as the desired values, but they are very tedious to calculate, so many approximations have been introduced. These are described and their relative merits assessed.     

Field work with the computer: Criteria for assessing systems

Computers, both large and small, can be of great assistance to a field worker. This assistance falls mainly in the area of relieving the field worker from tedious mechanical phases such as typing, sorting, and retrieving information. An examination of field work methods identifies issues and problems which must be addressed by any system for undertaking field work. A rationale for a loose and inclusive (as opposed to an exhaustive and mutually exclusive) coding system is presented. Efficiency, confidentiality, data reduction, and flexibility of testing propositions are discussed as criteria for assessing any system which facilitates field work. The paper concludes by contrasting the methods previously used to collect data, reduce its bulk, code, and retrieve information with what is possible with today's computer hardware and software, and with what will be possible in the near future.We wish to thank Peter Conrad, Susan LeBailly, and the anonymous reviewer of this article for their comments and suggestions.     

Chilling out in ‘cosmopolitan country’: Urban/rural hybridity and the construction of Daylesford as a ‘lesbian and gay rural idyll’

This paper advances scholarship on ‘lesbian and gay rural idylls’. A growing literature examines how ‘lesbian and gay rural idylls’ are not only produced in opposition to the urban, but are themselves urban constructs. We extend these contentions by exploring the processes of idyllisation suffusing lesbian and gay festival tourism in Daylesford, a town in non-metropolitan Victoria, Australia. We find that Daylesford’s idyllisation by the lesbian and gay tourism industry blurs the urban/rural binary, and instead hybridises rurality and urbanity in the tourism images and practices of ‘cosmopolitan country’ associated with the town. Research findings from Daylesford are analysed to examine how the dynamics of tourism marketing and festival attendance help produce and articulate this hybrid variant of the ‘lesbian and gay rural idyll’. We utilise two sets of mostly qualitative data for this inquiry: travel commentaries in the news media, and a survey conducted in Daylesford at the 2006 ChillOut Festival, Australia’s largest lesbian and gay rural festival.     

Comparison of ergonomic risk assessment outputs from Rapid Upper Limb Assessment and the Strain Index for tasks in automotive assembly plants

This paper compares the ergonomic risk assessment of a task for the upper extremities as determined by Rapid Upper Extremity Assessment (RULA) and the Strain Index (SI). The ergonomic risk to the upper extremities of 244 automotive assembly plant tasks were evaluated using RULA and SI. The outcomes of each tool were compared for each task. Results from this study provide practical insight into the methods used in each tool. This study compared only the ergonomic risk outputs from each tool; it does not pursue the question of which tool best predicts injury. The kappa score was 0.11, indicating little agreement between the outputs of the two tools. This is supported by the lack of monotonicity with a gamma score of 0.1. These results indicate that the risk assessment outcome of these two ergonomic assessment tools for the upper extremities do not agree.     

Measuring Aspects of Mobility,Polarization and Convergence in the Absence of Cardinality: Indices Based Upon Transitional Typology

Social Indicators Research - Social Mobility, Equality of Opportunity, Polarization, Convergence and Segmentation can each be construed as describing a particular transitional process between...     

Immigrants’ TANF Eligibility, 1996–2003: What Explains the New Across‐State Inequalities?1

Why did some states adopt stringent TANF‐eligibility policies toward immigrants, while others implemented more lenient rules throughout the post‐1996 welfare reform period? We use immigrant‐specific welfare rule measures to examine predominant theoretical frameworks for understanding state stringency in welfare policy. Analysis, utilizing a simultaneous equations modeling (SEM) strategy, uses annual data for all states. Results show consistent support for the median voter (primarily, the percent of liberal voters) theoretical explanation for less stringent state welfare eligibility rules regarding immigrants. While the size of the Social‐Security‐recipient population (tax capacity indicator) and perhaps unacceptable reproductive behavior (teen birth rate) relate to more stringent rules, key state economic and fiscal characteristics (i.e., per capita welfare expenditures, per capita personal income) explain less stringent TANF eligibility rules. Importantly, recent immigrant population concentration patterns (in new and traditional destination states) add to the theoretical explanation of less stringent state TANF immigrant eligibility policies.