Results 11 to 20 of about 1,001,591 (299)

Confounding in observational studies based on large health care databases: problems and potential solutions – a primer for the clinician

open access: yesClinical Epidemiology, 2017
Mette Nørgaard,1 Vera Ehrenstein,1 Jan P Vandenbroucke1–3 1Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark; 2Department of Clinical Epidemiology, Leiden University Medical Center, The Netherlands ...
Nørgaard M   +2 more
doaj   +1 more source

Confounding [PDF]

open access: yesPreventive Medicine, 1987
The magnitude of confounding is examined in nine case studies of two "weak" relationships: between artificial sweeteners and bladder cancer, and between oral contraceptives and cervical dysplasia. Confounding had little or no influence on the results of any published study.
Stellman, Steven D.
openaire   +3 more sources

Control of confounding in the analysis phase – an overview for clinicians

open access: yesClinical Epidemiology, 2017
Johnny Kahlert,1 Sigrid Bjerge Gribsholt,1,2 Henrik Gammelager,1,3 Olaf M Dekkers,1,4,5 George Luta1,6 1Department of Clinical Epidemiology, Institute of Clinical Medicine, 2Department of Endocrinology and Internal Medicine, 3Department of ...
Kahlert J   +4 more
doaj   +1 more source

Retrospective studies in emergency medicine: A practical guide to study design, bias, confounding, and interpretation [PDF]

open access: yesTurkish Journal of Emergency Medicine
Retrospective observational studies are a cornerstone of emergency medicine research, offering practical ways to address important clinical questions using real-world data.
Suha Turkmen, Sinan Pasli
doaj   +2 more sources

Confounding and control

open access: yesDemographic Research, 2007
This paper deals both with the issues of confounding and of control, as the definition of a confounding factor is far from universal and there exist different methodological approaches, ex ante and ex post, for controlling for a confounding factor.
Guillaume Wunsch
doaj   +2 more sources

Bias in occupational epidemiology studies. [PDF]

open access: yes, 2007
The design of occupational epidemiology studies should be based on the need to minimise random and systematic error. The latter is the focus of this paper, and includes selection bias, information bias and confounding.
Pearce, Neil   +2 more
core   +1 more source

Clustered environments and randomized genes: a fundamental distinction between conventional and genetic epidemiology. [PDF]

open access: yes, 2007
BACKGROUND: In conventional epidemiology confounding of the exposure of interest with lifestyle or socioeconomic factors, and reverse causation whereby disease status influences exposure rather than vice versa, may invalidate causal interpretations of ...
Timpson, NJ   +23 more
core   +1 more source

Confounding and Confounding Control

open access: yes, 2022
AbstractCurrently, the classical, counterfactual, and structural confounding definitions, are simultaneously used in teaching or practice context of epidemiology. Despite the resemblance, the three definitions are different in many aspects. A unified theory of confounding and confounding control has not been established.
Shaolong Ren, Genming Zhao
openaire   +1 more source

Levels of Evidence, Quality Assessment, and Risk of Bias: Evaluating the Internal Validity of Primary Research

open access: yesFrontiers in Veterinary Science, 2022
Clinical decisions in human and veterinary medicine should be based on the best available evidence. The results of primary research are an important component of that evidence base.
Jan M. Sargeant   +2 more
doaj   +1 more source

Statistical analysis in orthodontic journals: are we ignoring confounding? [PDF]

open access: yes, 2016
AIM To assess the prevalence of adjustment for confounding within statistical analysis and matching at the design stage in leading orthodontic journals and to explore potential associations between accounting for confounding and publication ...
Koletsi, Despina   +4 more
core   +2 more sources

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