SC

Simple Central randomization—The trial uses one list of drug kits. Each new patient is assigned the next sequential drug kit number on the list.

CS

Central Stratified randomization—The trial has multiple lists of drug kits. Each new patient is assigned to a drug kit list based on entered patient data. Then, the patient is assigned the next sequential drug kit number on that list.

SS

Simple Site randomization—Each site has a different drug kit list. Each new patient is assigned the next sequential drug kit number on the list for the patient's site.

SR

Stratified by Site randomization—Each site has multiple lists of drug kits. Each new patient is first assigned to the set of lists for the patient's site. Then, the patient is assigned to one of the site's drug kit lists based on entered patient data. Finally, the patient is assigned the next sequential drug kit number on that list.

S1

Cross-site screening number—Screening numbers are assigned sequentially across the trial without regard to which site screens the patient.

SN

Site-based screening number—Each site has a separate sequence of screening numbers.

P1

Cross-site patient number—Enrollment numbers are assigned sequentially across the trial without regard to which site enrolls the patient.

PN

Site-based patient number—Each site has a separate sequence of enrollment numbers.