Open AccessComment on “Observational Studies” by Dr. W.G. Cochran (1972)
Author(s) -
Mark J. van der Laan
Publication year - 2015
Publication title -
observational studies
Language(s) - English
Resource type - Journals
ISSN - 2767-3324
DOI - 10.1353/obs.2015.0024
Subject(s) - observational study , mathematics , statistics