2.2. Study Design, Blinding, Random Allocation, and Concealment
A randomized, double-blind, placebo-controlled trial was used. Participants who passed the screening were randomly allocated into two groups, including the study (receiving coffee cherry pulp juice concentrate) and the control (receiving a placebo drink) groups. All participants received unlabeled sachets of the assigned product so that they were blinded from their group identity. Furthermore, the laboratory scientist and statistical analyzer were also blinded from the assignment list.