A study, in Georgia, undertook 35 focus groups with stratification by gender, race and location.
Stratified log-rank test was used to compare OS between treatment groups with stratification factors at randomisation.
Patients were randomly assigned to one of the two treatment groups with stratification according to the clinical centers.
20 We used a secure internet based system to randomise individual participants one to one between the intervention and control groups, with stratification by centre.
After arriving at the animal facilities, the piglets were given an identity and distributed into two groups with stratification by their weight, namely Group 1 and Group 2. The animal care was provided under an Institutional Animal Care and Use Committee approved protocol.
Prior to the start of the academic year, as part of Faculty operations, students were randomly allocated to one of four groups with stratification for gender, international status and academic ability.
After athletes have finished ankle sprain treatment by means of usual care, they will be randomised to one of the two study groups with stratification for initial treatment (i.e. medical or non-medical).
Clinicians who have consented to participate will be randomly allocated, by computer-generated codes (code: exercise questionnaire group (EQ); no exercise questionnaire group (NQ)) in sealed opaque envelopes, to one of two groups with stratification to allow equal representation of qualifications.
Eligible patients will be randomized in a ratio of 3 1 to QFGKG group or placebo group, with stratification by participating center.
After the initial assessment, research personnel (MK and MP) randomised participants to the intervention or control group, with stratification by recruitment site and source of referral (hospital v community).
