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Open-label, Blinded, and Double-Blind
1. "Open-label study": Both the participants and the researchers know which treatment is being administered. This design is typically used when it’s not practical or ethical to hide the treatment from the participants, such as in surgical procedures or lifestyle interventions. 2. "Blinded study (single-blind)": In a single-blind study, only the participants are unaware of whether they are receiving the experimental treatment or a placebo (or the standard …
