<prompt> Translate the following text to EnglishAsilimia mbili ya wagonjwa walirudi kwa kikao cha pili, lakini uwiano huo ulitofautiana kutoka theluthi moja hadi 90 kati ya waingiliaji tofauti.  <response>: Two-thirds of the patients returned for a second session, but that proportion varied from one-third to 90 across the different interventionists. 