Randomization is based on a computer based random number generator which creates assignments that are numbered sequentially and placed in sealed envelopes.
Randomization was performed by computer based random number table.
Participants were selected using computer based random number generation, with stratification by sex and by level of PA (high, moderate or low), as determined by the GPAQ which was a component of the PARC Household Survey, using the GPAQ Analysis Guide [ 18].
Participants will be randomized to NAC or placebo treatment by a computer-based random eight block number generator.
The allocation sequence was generated by a computer-based random number generator using random permuted blocks with block sizes of four and six, stored on a remote web server.
A randomization schedule was established by the primary investigator using a computer-based random number generator.
Randomisation was performed by an individual not otherwise involved in the study using a computer-based random number generator.
If too many patients are eligible for inclusion, random selection by computer based on patient serial number, is used within the eligible group of one GP and pharmacist, to comply with the limit.
Random numbers was generated by computer based on the patient registration number with the clinic.
Eligible patients were assigned into two groups by a computer generated random table with blocks based on gender.
Here, the pool of known genotypes is entered into the computer and then drawn in a random order by a computer (using random numbers [ 62] imported into Microsoft Excel).
