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Randomized and quasi-randomized controlled trials.
It was a double-blind, randomized trial.
A spate of small randomized trials confirmed the effect.
What is needed, he said, is a randomized study.
Several large randomized studies have had similar results.
"Obviously, a randomized trial cannot address that question.
Similar(5)
But epidemiologists said non-randomized studies could be misleading.
Prospective, computer-randomized design.
We identified 3 non-randomized controlled trials.
aNon-randomized phase III.
Quasi-randomized controlled trial.
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