Modeling longitudinal change in biomarkers using data from a complex survey sampling design: An application to the Hispanic Community Health Study/Study of Latinos
Sign Up to like & getrecommendations! Published in 2023 at "Statistics in Medicine"
DOI: 10.1002/sim.9635
Abstract: In observational cohort studies, there is frequently interest in modeling longitudinal change in a biomarker (ie, physiological measure indicative of metabolic dysregulation or disease; eg, blood pressure) in the absence of treatment (ie, medication), and… read more here.
Keywords: methodology; survey sampling; complex survey; sampling design ... See more keywords
Models for cluster randomized designs using ranked set sampling.
Sign Up to like & getrecommendations! Published in 2023 at "Statistics in medicine"
DOI: 10.1002/sim.9743
Abstract: Cluster randomized designs (CRD) provide a rigorous development for randomization principles for studies where treatments are allocated to cluster units rather than the individual subjects within clusters. It is known that CRDs are less efficient… read more here.
Keywords: randomized designs; sampling design; ranked set; set sampling ... See more keywords
Soil apparent electrical conductivity‐directed sampling design for advancing soil characterization in agricultural fields
Sign Up to like & getrecommendations! Published in 2020 at "Vadose Zone Journal"
DOI: 10.1002/vzj2.20060
Abstract: The “4 per 1,000” initiative calls for land management practices that increase soil organic C (SOC). Despite an imperative for accurate SOC measurement, several methodological issues may complicate the verification of C sequestration. The aim… read more here.
Keywords: apparent electrical; directed sampling; soil characterization; soil ... See more keywords
Impacts of the sampling design on the abundance index estimation of Portunus trituberculatus using bottom trawl
Sign Up to like & getrecommendations! Published in 2020 at "Acta Oceanologica Sinica"
DOI: 10.1007/s13131-020-1607-z
Abstract: In the survey of fishery resources, the sampling design will directly impact the accuracy of the estimation of the abundance. Therefore, it is necessary to optimize the sampling design to increase the quality of fishery… read more here.
Keywords: station; sampling design; trituberculatus; estimation ... See more keywords
Limited Spatial Transferability of the Relationships Between Kriging Variance and Soil Sampling Spacing in Some Grasslands of Ireland: Implications for Sampling Design
Sign Up to like & getrecommendations! Published in 2019 at "Pedosphere"
DOI: 10.1016/s1002-0160(19)60801-5
Abstract: Abstract Sampling plays an important role in acquiring precise soil information required in modern agricultural production worldwide, which determines both the cost and quality of final soil mapping products. For sampling design, it has been… read more here.
Keywords: relationships kriging; sampling design; kriging variance; grid spacing ... See more keywords
Assessment of fish communities using environmental DNA: Effect of spatial sampling design in lentic systems of different sizes
Sign Up to like & getrecommendations! Published in 2019 at "Molecular Ecology Resources"
DOI: 10.1111/1755-0998.13105
Abstract: Freshwater fish biodiversity is quickly decreasing and requires effective monitoring and conservation. Environmental DNA (eDNA)‐based methods have been shown to be highly sensitive and cost‐efficient for aquatic biodiversity surveys, but few studies have systematically investigated… read more here.
Keywords: sampling design; environmental dna; lentic systems; spatial sampling ... See more keywords
Sampling design may obscure species–area relationships in landscape‐scale field studies
Sign Up to like & getrecommendations! Published in 2019 at "Ecography"
DOI: 10.1111/ecog.04568
Abstract: We investigated 1) the role of area per se in explaining anuran species richness on reservoir forest islands, after controlling for several confounding factors. We also assessed 2) how sampling design affects the inferential power… read more here.
Keywords: sampling design; area relationships; species area; area ... See more keywords
A modified version of diagonal systematic sampling in the presence of linear trend
Sign Up to like & getrecommendations! Published in 2022 at "PLoS ONE"
DOI: 10.1371/journal.pone.0265179
Abstract: Systematic sampling is one of the simplest and popular methods for selecting a random sample from a finite population. The diagonal systematic sampling scheme is a type of systematic sampling design which has gained the… read more here.
Keywords: diagonal systematic; sampling design; systematic sampling; linear trend ... See more keywords
Sampling re-design increases power to detect change in the Great Barrier Reef’s inshore water quality
Sign Up to like & getrecommendations! Published in 2022 at "PLoS ONE"
DOI: 10.1371/journal.pone.0271930
Abstract: Monitoring programs are fundamental to understanding the state and trend of aquatic ecosystems. Sampling designs are a crucial component of monitoring programs and ensure that measurements evaluate progress toward clearly stated management objectives, which provides… read more here.
Keywords: water; sampling design; power; water quality ... See more keywords
An Optimum Multivariate-Multiobjective Stratified Sampling Design: Fuzzy Programming Approach
Sign Up to like & getrecommendations! Published in 2017 at "Pakistan Journal of Statistics and Operation Research"
DOI: 10.18187/pjsor.v13i4.1834
Abstract: In stratified sampling design when the cost of measuring the units is not significant in each stratum, the estimation of population mean or total constructed from a selected sample according to Neyman allocation is advisable.… read more here.
Keywords: sampling design; programming approach; stratified sampling; fuzzy programming ... See more keywords
spsurvey: Spatial Sampling Design and Analysis in R
Sign Up to like & getrecommendations! Published in 2023 at "Journal of statistical software"
DOI: 10.18637/jss.v105.i03
Abstract: spsurvey is an R package for design-based statistical inference, with a focus on spatial data. spsurvey provides the generalized random-tessellation stratified (GRTS) algorithm to select spatially balanced samples via the grts() function. The grts() function… read more here.
Keywords: spsurvey spatial; design; analysis; sampling design ... See more keywords