Patients were equally assigned to 4 groups using the permuted block method. In this way, each treatment group was assigned a code (the codes are A for the group receiving neotadine once a day, B for receiving neotadine twice a day, C for receiving montelukast and D for the group receiving neotadine and Montelukast).
Then, a random number from 1 to 24 was assigned to different states of the blocks (ABCD, ABDC, ACDB,...), which were 24 states in total. After that, using the Random Sequence Generator software, random numbers were obtained and the order of the blocks in a list was determined. The blocks and numbers are as follows: ABCD for number 1, ABDC for number 2, ACBD for number 3, ACDB for number 4, ADBC for number 5, ADCB for number 6, BACD for number 7, BADC for number 8, BCAD for number 9, BCDA for number 10, BDAC for number 11, DBAC for number 12, BDCA for number 13, CABD for number 14, CADB for number 15, CDAB for number 16, CDBA for number 17, CBAD for number 18, CBDA for number 19, DABC for number 20, DACB for number 21, DCAB for number 22, DCBA for number 23, DBCA for number 24,((It should be noted that this list is predetermined and after the sample size is determined, the allocation will be done up to the fifteenth block of 4 according to the number of samples in each group. In this way, 15 people will be included in each group.)