Results 31 to 40 of about 576,589 (159)

National weighting of data from the Behavioral Risk Factor Surveillance System (BRFSS)

BMC Medical Research Methodology, 2016
Background The Behavioral Risk Factor Surveillance System (BRFSS) is a network of health-related telephone surveys--conducted by all 50 states, the District of Columbia, and participating US territories—that receive technical assistance from CDC.
Ronaldo Iachan, Carol Pierannunzi, Kristie Healey, Kurt J. Greenlund, Machell Town   +4 more
doaj   +1 more source

The Savvy Survey #3: Successful Sampling

EDIS, 2014
As part of the Savvy Survey series, this publication provides Extension faculty with an overview of topics to consider when thinking about who should be surveyed.
Jessica L. Gouldthorpe, Glenn D. Israel
doaj   +5 more sources

A protocol for a multi-site, spatially-referenced household survey in slum settings: methods for access, sampling frame construction, sampling, and field data collection

BMC Medical Research Methodology, 2019
Background Household surveys are a key epidemiological, medical, and social research method. In poor urban environments, such as slums, censuses can often be out-of-date or fail to record transient residents, maps may be incomplete, and access to sites ...
Improving Health in Slums Collaborative
doaj   +1 more source

COVID-19 serological survey using micro blood sampling

Scientific Reports, 2021
During August 2020, we carried out a serological survey among students and employees at the Okinawa Institute of Science and Technology Graduate University (OIST), Japan, testing for the presence of antibodies against SARS-CoV-2, the causative agent of ...
Melissa M. Matthews, Tae Gyun Kim, Satoshi Shibata, Noriko Shibata, Christian Butcher, Jaekyung Hyun, Keon Young Kim, Theodore Robb, Siang Sheng Jheng, Masashi Narita, Tomoari Mori, Mary Collins, Matthias Wolf   +12 more
doaj   +1 more source

Sampling for Big Data Profiling: A Survey

IEEE Access, 2020
Due to the development of internet technology and computer science, data is exploding at an exponential rate. Big data brings us new opportunities and challenges.
Zhicheng Liu, Aoqian Zhang
doaj   +1 more source

Intracluster Homogeneity Selection Problem in a Business Survey

Business Systems Research, 2016
Background: In the cluster sampling approach many parameters have influence on lowering the survey costs and one of the most important is the intracluster homogeneity.
Žmuk Berislav
doaj   +1 more source

Editorial Introduction

Survey Research Methods, 2012
This issue of Survey Research Methods contains four papers that were presented at the ITACOSM11 conference held in Pisa, Italy, June 27-29, 2011. The four papers published here represent a good cross-section of current Italian research on sample survey ...
Ray Chambers
doaj   +1 more source

Essay: Sunday shopping - The case of three surveys

Survey Research Methods, 2015
There is a growing discussion about the use of non-probability sampling in survey research. Probability sampling is the preferred method of sample selection, but practical problems like reduced data collection budgets, increasing nonresponse rates, and ...
Jelke Bethlehem
doaj   +1 more source

Is Simple Random Sampling Better than Quota Sampling? An Analysis Based on the Sampling Methods of Three Surveys in South Korea

Asian Journal for Public Opinion Research, 2016
This paper considers whether random sampling always produces more accurate survey results in the case of South Korea. We compare information from the 2010 census to the demographic variables of three public opinion surveys from South Korea: Gallup Korea ...
Sung Kyum Cho, Deok-Hyun Jang, Sarah Prusoff LoCascio   +2 more
doaj   +1 more source

Correcting Waterhole-Driven Population Biases in Arid Ecosystems: A Case Study of Oryx (Oryx gazella)

Diversity
Transect surveys and distance sampling are widely used to estimate wildlife population densities, but these methods can be biased when animals aggregate near features such as waterholes or other resources that occur along survey routes.
Erika P. Swenson, Murray Tindall, Nils Odendaal, Larkin A. Powell   +3 more
doaj   +1 more source