zˈɛlənz dɪzˈaɪn ɪz ɐn ɛkspˌɛɹɪmˈɛntəl dɪzˈaɪn fɔːɹ ɹˈændəmˌaɪzd klˈɪnɪkəl tɹˈaɪəlz pɹəpˈoʊzd baɪ hˈɑːɹvɚd skˈuːl ʌv pˈʌblɪk hˈɛlθ stˌæɾɪstˈɪʃən mˈɑːɹvɪn zˈɛlən nˈaɪntiːnhˈʌndɹɪd twˈɛnti sˈɛvən dˈæʃ tˈuː θˈaʊzənd fˈoːɹtiːn.
Zelen's design is an experimental design for randomized clinical trials proposed by Harvard School of Public Health statistician Marvin Zelen (1927-2014).