5caabe4b_FAQs___Speechbite__Study_Design
[Type] Level 111-3 [on speechBITE] Indexed as non-randomised controlled trials and listed third on speechBITE. Non-randomised controlled trials are rated on the PEDro-P scale for methodological quality. [Study Design] 
A comparative study without concurrent controls: historical control study, two or more single arm study, interrupted time series without a parallel control group
FAQs | Speechbite
Study Design