Does matching involve a randomization process?

I am happy to share! :D

Thank you

Matching by itself does not involve a random process. But it could be integrated with the random assignment. In a matched pairs design, treatment options are randomly assigned to pairs of similar participants. The objective is to balance baseline confounding variables by distributing them evenly between the treatment and the control group. Matched pairs design works in 2 steps: Firstly, divide participants into pairs by matching each participant with their closest pair regarding some confounding variable(s) like age or gender. Then within each pair, randomly assign one participant to either the treatment or the control group (and the other will be automatically assigned to the other group).