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We describe an existing simple but largely ignored procedure for marginalizing estimates of conditional odds ratios and propose a similar procedure for marginalizing estimates of conditional hazard ratios (allowing for right censoring), demonstrating its performance in simulation studies and in a reanalysis of data from a small randomized trial in primary biliary cirrhosis patients. In addition, we aim to provide an educational summary of issues surrounding (non)collapsibility from a causal inference perspective and to promote the idea that the words\n                    <jats:italic>conditional<\/jats:italic>\n                    and\n                    <jats:italic>adjusted<\/jats:italic>\n                    (likewise\n                    <jats:italic>marginal<\/jats:italic>\n                    and\n                    <jats:italic>unadjusted<\/jats:italic>\n                    ) should not be used interchangeably.\n                  <\/jats:p>","DOI":"10.1002\/bimj.201900297","type":"journal-article","created":{"date-parts":[[2020,12,14]],"date-time":"2020-12-14T07:55:46Z","timestamp":1607932546000},"page":"528-557","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":152,"title":["Making apples from oranges: Comparing noncollapsible effect estimators and their standard errors after adjustment for different covariate sets"],"prefix":"10.1002","volume":"63","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5649-9320","authenticated-orcid":false,"given":"Rhian","family":"Daniel","sequence":"first","affiliation":[{"name":"Division of Population Medicine Cardiff University  Cardiff UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingjing","family":"Zhang","sequence":"additional","affiliation":[{"name":"Division of Population Medicine Cardiff University  Cardiff UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel","family":"Farewell","sequence":"additional","affiliation":[{"name":"Division of Population Medicine Cardiff University  Cardiff UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,12,14]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/sim.4780080803"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10985-015-9335-y"},{"key":"e_1_2_11_4_1","volume-title":"Statistical models based on counting processes","author":"Andersen P. 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