Jens Hainmueller, Duncan Lawrence, Justin Gest, Michael Hotard, Rey Koslowski, David D. Laitin, A randomized controlled design reveals barriers to citizenship for low-income immigrants, Proceedings of ...

SIV SKOTHEIM, LISBETH DAHL, KATINA HANDELAND, LIVAR FRØYLAND, ØYVIND LIE, JANNIKE ØYEN, MARIAN KJELLEVOLD, KJELL MORTEN STORMARK, INGVILD EIDE GRAFF, Design of the FINS-TEENS study, Scandinavian ...

Many groundbreaking vaccines were initially tested using this methodology. For example, the Salk polio vaccine field trial in the 1950s employed a randomized, placebo-controlled design.