translation.en: It wasn’t a function of how old or how sick they were -- it was mainly how much they changed, and the oldest patients improved as much as the young ones.
translation.zh: 这与他们的年龄大小或病情严重程度无关， 主要与他们作了多少改变有关， 年龄最大的病人与年轻的病人改善的程度是相同的。