Results 21 to 30 of about 2,499,937 (274)

Essay: Sunday shopping - The case of three surveys

open access: yesSurvey 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

Suicidal behaviors: Relationship with body mass index and serological indicators

open access: yesEuropean Psychiatry, 2021
Introduction Current research has demonstrated associations between variables of a biomedical nature with the presence of psychological indicators. Objectives To analyze the relationship between levels of total cholesterol, triglycerides, and Body ...
G. Esgalhado, I. Costa
doaj   +1 more source

Methodology series module 5: Sampling strategies

open access: yesIndian Journal of Dermatology, 2016
Once the research question and the research design have been finalised, it is important to select the appropriate sample for the study. The method by which the researcher selects the sample is the 'Sampling Method'.
Maninder Singh Setia
doaj   +1 more source

Demographics and health outcomes in a U.S. probability sample of transgender parents

open access: yesJournal of family psychology, 2020
Non-representative estimates indicate that 25%–50% of transgender people are parents. Yet very little is known about their demographic characteristics and health outcomes.
N. Carone   +4 more
semanticscholar   +1 more source

Probability-Distribution-Guided Adversarial Sample Attacks for Boosting Transferability and Interpretability

open access: yesMathematics, 2023
In recent years, with the rapid development of technology, artificial intelligence (AI) security issues represented by adversarial sample attack have aroused widespread concern in society.
Hongying Li   +6 more
doaj   +1 more source

An Innovative Approach to the Design of a National Probability Sample of Sexual Minority Adults

open access: yesLGBT Health, 2020
Purpose: Sampling lesbian, gay, and bisexual (LGB) people to recruit a national probability sample is challenging for many reasons, including the low base rate of LGB people in the population. To address this challenge, researchers have relied on diverse
I. Meyer   +4 more
semanticscholar   +1 more source

On the probability of cost-effectiveness using data from randomized clinical trials

open access: yesBMC Medical Research Methodology, 2001
Background Acceptability curves have been proposed for quantifying the probability that a treatment under investigation in a clinical trial is cost-effective. Various definitions and estimation methods have been proposed.
Willan Andrew R
doaj   +1 more source

Statistical considerations in the design and analysis of non-inferiority trials with binary endpoints in the presence of non-adherence: a simulation study [version 2; peer review: 2 approved]

open access: yesWellcome Open Research, 2020
Protocol non-adherence is common and poses unique challenges in the interpretation of trial outcomes, especially in non-inferiority trials. We performed simulations of a non-inferiority trial with a time-fixed treatment and a binary endpoint in order to:
Yin Mo   +3 more
doaj   +1 more source

Evaluating the Impact of a Non-Probability Sample-Based Estimator in a Linear Combination with an Estimator from a Probability Sample

open access: yesJournal of Official Statistics
In this article, the estimators based on data from independent non-probability and probability samples are combined to estimate finite population parameters. Assuming that the values of the study variable are available in both samples, the integration of
Andrius Čiginas   +2 more
semanticscholar   +1 more source

An Analytical Approach to Estimate Prevalence of Depression from a Non-Probability Sample of College Students in Karachi Using Beck Depression Inventory

open access: yesAnnals of Abbasi Shaheed Hospital and Karachi Medical & Dental College, 2020
Objective: To estimate and compare the prevalence of depression among college students in Karachi. The analytical approach was aimed to minimize biases produced by profession, gender, and age of samples on the prevalence rate. Methods: A cross-sectional
Nuzhat Aisha Akram   +5 more
doaj   +1 more source

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