When global policy makers and service providers introduce new interventions, we expect the products to be evaluated by academic researchers. The gold standard for measuring the effectiveness of an intervention is the randomised controlled trial (RCT). The participants in a RCT are randomly allocated to receive either the new intervention or a placebo. Historically, RCTs have been conducted to estimate the effectiveness of drugs. Today the trials have become an invaluable research method used across multiple disciplines. Currently, academics are introducing qualitative research with RCTs. The methodology of qualitative research is in many ways the opposite of a RCT, as it emphasises subjectivity rather than objectivity, and flexibility over standardisation. A Practical Guide to using Qualitative Research with Randomized Controlled Trials is a 'how-to' manual on combining these contrasting methodologies to get the best result. Guiding the reader through the use of qualitative rese