6S Research Pyramid, reproduced from https://libraryguides.mcgill.ca/ebpresourcespyramid , based on:
Dicenso, A., Bayley, L., & Haynes, R. B. (2009). Accessing pre-appraised evidence: fine-tuning the 5S model into a 6S model. Evidence-based nursing, 12(4), 99–101. https://doi.org/10.1136/ebn.12.4.99-b
Healthcare professionals sometimes use the PICO or PICOT format to develop keywords for searching of clinical questions where:
P - Patient or Population
I - Intervention
C - Comparison
O - Outcome
T - Time (sometimes included)
For more information about forming and using a PICO question to search, please see the American Journal of Nursing article below.