Qualitative methods are an increasing element of the development of randomised controlled trials (RCTs), particularly those of complex interventions where the conduct of the intervention is mediated by human behaviour.

Is randomized controlled trial quantitative or qualitative?

Because the outcomes are measured, RCTs are quantitative studies. In sum, RCTs are quantitative, comparative, controlled experiments in which investigators study two or more interventions in a series of individuals who receive them in random order.

Are clinical trials qualitative?

Background. Qualitative research methods are increasingly used within clinical trials to address broader research questions than can be addressed by quantitative methods alone.