In this study, 60 patients are randomized simply using a table of random numbers. To use the table of random numbers, first, the framework of the statistical community is determined (60 people); respectively, we give them a code or serial number. Codes and numbers should be equal to that assigned to the members of society; for example, in our research, we give two-digit codes to people, such as 01, 02, 03, ..., 11, 12,...
To select sample people from the table, we randomly start from a point in the row or column direction. We can choose the point by closing our eyes and placing a finger or pen tip on the table. Moving in the row or column direction does not differ and is optional. But according to the type of code digits (one digit, two digits, three digits, etc.), we must choose the same number of digits in the direction of a row or column. After this, we control the route numbers. Whether we like it or not, we will come across two types of numbers, one smaller than the number of the studied community and the other larger than the number of the community. We should pay attention to and choose only the smaller numbers. The selected number is the code of an individual from the community chosen as a sample. This work should continue until the sample people can be selected as small as possible. After the sample volume is complete, the sampling work ends.
The numbers will be placed in sealed envelopes, and when the participants enter, an envelope will be assigned to each of them, and they will be placed in one of the two intervention groups.