Could you comment on this please?

Hi,

Could you comment on the following please?

"Individuals who met the inclusion criteria were randomly assigned to each of the intervention or control groups after obtaining the written consent form, collecting demographic information, and performing initial assessments. Randomization was performed by selecting 30 slips of papers numbered 1 to 30, placed inside the sealed envelopes. The patient selected an envelope; even numbers were assigned to the intervention group and odd numbers to the control group. The selected envelope was then removed and the procedure was repeated for the next patient."

Thanks!