Hi Andres! I'm a quality of life researcher who uses a lot of different methods and tools. Think I may be able to help out here, but in order to point you in the best direction(s) it would be great to see more detail about your project aims. Are you looking for differences in people's *overall* quality of life or are you specifically interested in their quality of life during times where they are actively self-administering and/or receiving medication...or both?
Aggregate QoL measures useful for your goals are easy to come by--for instance, you can use validated instruments like the EuroQoL. Context-specific measures related to a person's experience of the pharmacotherapy process as treatment is being administered are also highly feasible but will require substantially more creativity on your part.
Can you share a little more about your project so I can offer more detailed recommendations for assessing each type of QoL you may wish to measure? In the meantime, I highly recommend Ann Bowling's "Measuring Health" as an overall resource for guiding your thinking and selecting specific instruments. The book is excellent throughout and specifically offers a chapter on QoL measurement.
Hello Alexandra. Thanks for your answer. I am working on a project that tries to identify if there is a difference in quality of life in patients with certain pathology comparing oral vs other routes of drugs administration. For example, quality of life in patients with type 2 diabetes mellitus using oral medications vs the ones on insulins, or between different subcutaneous medications (long vs short acting, or weekly-dose GLP-1 agonists). I would like know if a certain test measures this variable, not just to apply a generic QoL test in the two groups of patients (oral vs other). Thanks again!