Detection of animals during visual surveys is rarely perfect or constant, and failure to account for imperfect detectability affects the accuracy of abundance estimates. Freshwater cetaceans are among the most threatened group of mammals, and visual surveys are a commonly employed method for estimating population size despite concerns over imperfect and unquantified detectability. We used a com...

1Uses and gratifi cations theory provides an analytical framework for explaining consumer motivations for media usage. In this study, uses and gratifi cations theory was used to compare the motivations for using magazines and the Internet among women’s magazine readers in South Africa. By focusing on the usage of the two media, the study aimed to provide a lens through which women’s magazine pu...

................................................................................................... 4 Review of current practices to increase the intake of fruit and vegetables focusing on the EU, in particular Hungary and Poland ..................................... 5 Introduction ........................................................................................... 5 Role of fruit and ve...

This is the second of a series of quarterly reports on the surveillance of the health status, health behaviours, and risk factors of the people of NSW, which will be produced from the Continuous NSW Health Survey. The first quarterly report covered the period March to December 2002. Ten indicators have been selected for inclusion in the quarterly report. These have been chosen either because th...

Résumé Abstract Fertility remains higher and contraceptive levels are substantially lower in Sub-Saharan Africa than elsewhere in the developing world. In this paper we use information on individuals and couples provided in recent Demographic and Health Surveys (DHS, fifth wave) undertaken in Ghana, Kenya, Madagascar, and Zambia. We use bivariate and multivariate techniques to examine the deter...

BACKGROUND Several neighbourhood elements have been found to be related to leisure-time walking and cycling. However, the association with neighbourhood safety remains unclear. This study aimed to assess the association of neighbourhood-level safety with leisure-time walking and cycling among Dutch adults. METHODS Data were derived from the national health survey (POLS) 2006-2009, with valid ...

BACKGROUND A number of instruments have been developed to measure health-related quality of life (HRQoL), differing in the health domains covered and their scoring. Although few such measures have been consistently included in US national health surveys over time, the surveys have included data on a broad range of symptoms and impairments, which enables the tracking of population health trends....

Surveys are projects involving systematic data collection without a specific hypothesis to be tested and hence without a specific research design. This paper reviews their uses, and some of the issues involved with measuring dental caries in surveys. The principal benefits of surveys are in (a) monitoring trends in oral disease when the surveys are repeated periodically: and (b) giving dental h...