The strongest design would be obtained from a randomized controlled trial.
This comparison should take place within the context of a randomized controlled trial.
The quantitative phase was structured as a parallel randomized controlled trial.
So we don't have a really clear randomized controlled trial that says it works.
For testing a hypothesis a randomized controlled trial is essential.
The study was an observational study, not a randomized controlled trial.
Ten years later, the first randomized controlled trial was published.
Diez años después se publicó el primer ensayo controlado aleatorizado.
Since that time, the results of a randomized controlled trial have been reported.
Desde entonces, se notificaron los resultados de un ensayo aleatorizado controlado.
A randomized controlled trial compared the combination of these two drugs with sunitinib.
En un ensayo controlado aleatorizado se comparó la combinación de estos dos fármacos con el sunitinib.
In order to answer that question, a randomized controlled trial is necessary.
Para encontrar una respuesta a esta pregunta, se necesita un ensayo aleatorizado controlado.
The strongest evidence would be that obtained from a well-designed and well-conducted randomized controlled trial.
El diseño más sólido se obtendrá de un ensayo controlado aleatorizado.
Every randomized controlled trial on low-carb diets shows that they
Cada ensayo controlado aleatorizado sobre dietas bajas en carbohidratos muestra que
Similarly, another multicenter randomized controlled trial confirmed the reduction in risk of recurrence.
Del mismo modo, en otro ensayo controlado aleatorizado multicéntrico se confirmó la reducción del riesgo de recidiva.