Ichi chidzakhala kumapeto luso pa angathe zakambidwa chimango; Kuti mudziwe zambiri, werengani Morgan and Winship (2014) ndi Imbens and Rubin (2015) . Zakumapeto adzasonyeza mfundo zotsatirazi mawu a zakambidwa kuthekera:
Zakumapeto idzakhalanso ndi fanizo nkhani pakati-, mkati-nkhani, ndi machenjerero losanganikirana. Zakumapeto Mwinanso fotokozerani za ntchito mfundo chisanadze mankhwala kapangidwe kapena kusanthula.