ABSTRACT
Participants in the study are randomised into one of the two groups. Th is process can be achieved in a variety of ways: the fi rst method is by a computer-generated randomised number that allocates the participant into one of the groups; the second method is by using a random number table and selecting a specifi c number sequence as a means of allocating a participant to a group; the third method is not a true randomised allocation but a quasi-randomisation, where the day of the week or month is used to determine the group allocation. Participants are randomised into either of the groups to ensure the characteristics of the study participants are the same in each group. Th e randomisation process aims to distribute the participants almost evenly into either of the groups.
