{"id":30,"date":"2007-02-22T09:03:00","date_gmt":"2007-02-22T17:03:00","guid":{"rendered":"http:\/\/www.mii.ucla.edu\/causality\/?p=38"},"modified":"2007-02-22T09:03:00","modified_gmt":"2007-02-22T17:03:00","slug":"back-door-criterion-and-epidemiology","status":"publish","type":"post","link":"https:\/\/causality.cs.ucla.edu\/blog\/index.php\/2007\/02\/22\/back-door-criterion-and-epidemiology\/","title":{"rendered":"Back-door criterion and epidemiology"},"content":{"rendered":"<p><font> The definition of the back-door condition (<em>Causality<\/em>, page 79, Definition 3.3.1) seems to be contrived. The exclusion of descendants of <em>X<\/em> (Condition (i)) seems to be introduced as an after  fact, just because we get into trouble if we dont. Why cant we get it from first principles; first define sufficiency of <em>Z<\/em> in terms of  the goal of removing bias and, then, show that, to achieve this goal, you neither want nor need  descendants of <em>X<\/em> in <em>Z<\/em>.<\/font><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The definition of the back-door condition (Causality, page 79, Definition 3.3.1) seems to be contrived. The exclusion of descendants of X (Condition (i)) seems to be introduced as an after fact, just because we get into trouble if we dont. Why cant we get it from first principles; first define sufficiency of Z in terms [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,4,14],"tags":[],"class_list":["post-30","post","type-post","status-publish","format-standard","hentry","category-back-door-criterion","category-book-j-pearl","category-epidemiology"],"_links":{"self":[{"href":"https:\/\/causality.cs.ucla.edu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/30","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/causality.cs.ucla.edu\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/causality.cs.ucla.edu\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/causality.cs.ucla.edu\/blog\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/causality.cs.ucla.edu\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=30"}],"version-history":[{"count":0,"href":"https:\/\/causality.cs.ucla.edu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/30\/revisions"}],"wp:attachment":[{"href":"https:\/\/causality.cs.ucla.edu\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=30"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/causality.cs.ucla.edu\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=30"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/causality.cs.ucla.edu\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=30"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}