Concept↦Protocol↦Research Question↦Feasibility
What is it? Why is it important?
When planning a study, one of the first steps is to define a sound research question. The question will be the foundation needed to develop a study protocol.
A research question should:
- Have a clear focus
- Be of interest to researchers and the public
- Add new knowledge to current problems
Assessing the feasibility of a research question can help to decide whether planning a respective study is realistic.
An initial evaluation includes the:
- Potential access to adequate numbers of participants from the target population under investigation: a sample-size-calculation estimates the required number of study participants
- Study design best suited to answer the research question. Designs differ greatly in complexity, and have a major impact on the scope of the study. More complex designs require additional resources and finances
- Compliance with principles of research ethics: the study has an acceptable risk-benefit ratio (e.g. participant risks and rights)
What do I need to do?
As a SP-INV:
- Define your research question based on a systematic review of relevant existing evidence (e.g. literature review)
- Explain why your research question is clinically relevant and worthwhile to investigate
- Define how the research question benefits the population under investigation
- Perform an initial feasibility assessment of your research question
In order to answer your research question:
- Define the study hypothesis
- Define study outcome(s)/endpoint(s)
- Define variables (e.g. predictor- and confounding variables) required for the statistical analysis
- Calculate the required sample size, which defines the number of study participants to be included in your study
- Select an appropriate study design
- Consult a statistician for support
An often-neglected feasibility aspect is the required time-investment needed to conduct a study. Ensure this aspect is included in your overall feasibility-assessment.
Where can I get help?
Your local CTU↧ can support you with experienced staff regarding this topic
Basel, Departement Klinische Forschung, CTU, dkf.unibas.ch
Lugano, Clinical Trials Unit, CTU-EOC, www.ctueoc.ch
Bern, Clinical Trials Unit, CTU, www.ctu.unibe.ch
Geneva, Clinical Research Center, CRC, crc.hug.ch
Lausanne, Clinical Research Center, CRC, www.chuv.ch
St. Gallen, Clinical Trials Unit, CTU, www.kssg.ch
Zürich, Clinical Trials Center, CTC, www.usz.ch
Swiss Law
HRA – see in particular articles
- Art. 5 Scientifically relevant topic
- Art. 10 Scientific requirements
- Art. 11 Protection of participants / Subsidiarity
- Art 12 Protection of participants / Risks and burdens