Posts Tagged ‘why0mg’

Policy-relevant proportions for direct effects

March 31, 2019

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3523303/

discusses NDE & NIE

A Decade of GWAS Results in Lung Cancer | Cancer Epidemiology, Biomarkers & Prevention

March 31, 2019

http://cebp.aacrjournals.org/content/27/4/363.long

QT:[[”
The first GWAS on lung cancer were reported in 2008. Three independent studies identified a susceptibility locus on chromosome 15q. Hung and colleagues (14) found two SNPs strongly associated with lung cancer on chromosome 15q25. Further genotyping in this region revealed many SNPs in tight linkage disequilibrium (LD) showing evidence of association. Six genes are located in this region including three nicotinic acetylcholine receptor subunits (CHRNA5, CHRNA3, and CHRNB4). Interestingly, no appreciable variation in the risk was found across smoking categories or histologic subtypes of lung cancer. In a second GWAS, a SNP within the CHRNA3gene was strongly associated with smoking quantity and nicotine dependence (15). The same SNP was also strongly associated with lung cancer. The results suggest that the variant on chromosome 15q25 confers risk of lung cancer through its effect on tobacco addiction.
“]]

Equivalence of the Mediation, Confounding and Suppression Effect

March 31, 2019

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2819361/

Mediation (statistics) – Wikipedia

March 31, 2019

Cites the classic paper:

Baron, R. M. and Kenny, D. A. (1986) “The Moderator-Mediator Variable Distinction in Social Psychological Research – Conceptual, Strategic, and Statistical Considerations”, Journal of Personality and Social Psychology, Vol. 51(6), pp. 1173–1182.

https://en.wikipedia.org/wiki/Mediation_(statistics)

Introduction to Mediation Analysis | University of Virginia Library Research Data Services + Sciences

March 31, 2019

https://data.library.virginia.edu/introduction-to-mediation-analysis/

QT:[[”
To analyze mediation:
1. Follow Baron & Kenny’s steps
2. Use either the Sobel test or bootstrapping for significance testing. “]]

William Kruskal – Wikipedia

March 2, 2019

https://en.wikipedia.org/wiki/William_Kruskal

UCB bias correspondent

Sex Bias in Graduate Admissions: Data from Berkeley | Science

March 2, 2019

http://science.sciencemag.org/content/187/4175/398

Sex Bias in Graduate Admissions: Data from Berkeley

P. J. Bickel1, E. A. Hammel1, J. W. O’Connell1

Science 07 Feb 1975:
Vol. 187, Issue 4175, pp. 398-404
DOI: 10.1126/science.187.4175.398

A type of Simpson’s paradox

Barbara Stoddard Burks – Wikipedia

March 2, 2019

https://en.wikipedia.org/wiki/Barbara_Stoddard_Burks

But For Definition

March 1, 2019

http://www.duhaime.org/LegalDictionary/B/ButFor.aspx

Causal Analysis in Theory and Practice » On the Classification and Subsumption of Causal Models

March 1, 2019

http://causality.cs.ucla.edu/blog/index.php/2016/06/28/on-the-classification-and-subsumption-of-causal-models/

QT:[[”
The taxonomy that has helped me immensely is the three-level hierarchy described in chapter 1 of my book Causality: 1. association, 2. intervention, and 3 counterfactuals. It is a useful hierarchy because it has an objective criterion for the classification: You cannot answer questions at level i unless you have assumptions from level i or higher.
“]]