A meta-analysis can be constituted-of-or-filled-with randomized controlled trials.Logical formLearned from31 sentences. Clinical trials can be randomized.Logical formLearned from31 sentences. Blocks can be randomized.Logical formLearned from31 sentences. A list can be randomized.Logical formLearned from31 sentences. A rounding can be randomized.Logical formLearned from30 sentences. A fashion can be randomized.Logical formLearned from28 sentences. A sample can be randomized.Logical formLearned from27 sentences. Strategies can be randomized.Logical formLearned from27 sentences. (Trial data) can be randomized.Logical formLearned from27 sentences. Evidence can be from randomized trials.Logical formLearned from25 sentences. An (approximation scheme) can be randomized.Logical formLearned from24 sentences. Clinical studies can be randomized.Logical formLearned from24 sentences. A prospective study can be randomized.Logical formLearned from24 sentences. Evidence can be from randomized controlled trials.Logical formLearned from23 sentences. An (intervention trial) can be randomized.Logical formLearned from23 sentences.