Results 21 to 30 of about 1,150,534 (306)
Kerala Journal of Psychiatry, 2021 Case-control studies (CSS) are observational analytic studies done often in instances of rare cases or outcomes. In a case-control study, clearly defined cases and controls arising from the same population is compared for well-measured exposures.
Pankajakshan Vijayanthi Indu +1 more
doaj +1 more source
BMC Medical Research Methodology, 2003 Background The aim of this article is to explore ways in which selection bias and ascertainment bias can be reduced and investigated in trials, by using the example of a drug trial carried out in both developed and developing countries in hospital ...
Pinol Alain PY +5 more
doaj +1 more source
Selective Inference for Testing Trees and Edges in Phylogenetics
Frontiers in Ecology and Evolution, 2019 Selective inference is considered for testing trees and edges in phylogenetic tree selection from molecular sequences. This improves the previously proposed approximately unbiased test by adjusting the selection bias when testing many trees and edges at ...
Hidetoshi Shimodaira +3 more
doaj +1 more source
randomizeR: An R Package for the Assessment and Implementation of Randomization in Clinical Trials
Journal of Statistical Software, 2018 Randomization in clinical trials is the key design technique to ensure the comparability of treatment groups. Although there exist a large number of software products which assist the researcher to implement randomization, no tool which would cover a ...
Diane Uschner +3 more
doaj +1 more source
Bounding Bias Due to Selection
Epidemiology, 2019 When epidemiologic studies are conducted in a subset of the population, selection bias can threaten the validity of causal inference. This bias can occur whether or not that selected population is the target population and can occur even in the absence of exposure–outcome confounding.
Smith, Louisa H., VanderWeele, Tyler J.
openaire +4 more sources
An Information-Theoretic Measure for Balance Assessment in Comparative Clinical Studies
Entropy, 2020 Limitations of statistics currently used to assess balance in observation samples include their insensitivity to shape discrepancies and their dependence upon sample size.
Jarrod E. Dalton +2 more
doaj +1 more source
Response-Based Sampling for Binary Choice Models With Sample Selection
Econometrics, 2018 Sample selection models attempt to correct for non-randomly selected data in a two-model hierarchy where, on the first level, a binary selection equation determines whether a particular observation will be available for the second level (outcome equation)
Maria Felice Arezzo +1 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Central nervous system (CNS) neuroblastoma, FOXR2‐activated, is a recently recognized entity in the WHO CNS5 classification, defined by activation of the FOXR2 transcription factor and unique histopathological features. This review synthesizes available literature and pooled clinical data, providing insight into demographics ...
Sudarshawn Damodharan +1 more
wiley +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Cerebellar ataxia after pediatric brain tumor treatment can cause persistent gait, balance, and speech impairment, yet no established rehabilitation strategy exists. Somato‐cognitive coordination therapy (SCCT) is a virtual reality–guided intervention designed to promote sensorimotor integration through visually constrained reaching
Masanobu Takeuchi +10 more
wiley +1 more source
Selection and Misclassification Biases in Longitudinal Studies
Frontiers in Veterinary Science, 2018 Using imperfect tests may lead to biased estimates of disease frequency and measures of association. Many studies have looked into the effect of misclassification on statistical inferences.
Denis Haine +5 more
doaj +1 more source