试验参与者通常将会被随机分配到标准治疗组或者是新治疗组(称之为随机分组)。
A participant will usually be assigned to the standard group or the new group at random (called randomization).
背景一项为期24周的前瞻性干预试验对开放性十二指肠-空肠旷置术(GJB)与配对对照组标准药物治疗的效果进行比较。
Background a 24-week interventional prospective trial was performed to compare the benefits of open duodenal-jejunal exclusion surgery (GJB) with a matched control group on standard medical care.
在符合选择标准的所有42个至少24个星期时间的后续实验，试验采用随机对照组，有效的心梗与心血管死亡数据。
In all, 42 trials met the inclusion criteria of a follow-up period of at least 24 weeks, the use of a randomized control group, and the availability of outcome data on mi and cardiovascular death.
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