Its application will provide a guarantee that data generated originates from the intended sample and only the intended sample.
Hence, the recruitment process was thus shortened and consequently, smaller than intended sample size.
From a total intended sample of 2032 students, 1943 (95.6%) participated at least once during the first six (adolescent) waves.
After excluding incomplete responses, analysis was conducted on 241 complete responses, which was 89.3% of the intended sample.
Since the intended sample for the regional SmartAPPetite project will range more greatly among the general public, however, this is only a minor concern.
Whilst there was relatively low uptake of the study by schools (63%), reducing the intended sample of 80 schools to 75, both the number of schools and students included exceeded the minimum required to achieve the intended power of 80%.
An invitation to be a part of the case study was sent by email to all residents-in-training at this institution (n = 533); the first 40 who replied were included in the original intended sample.
Two practices had issued NHSHC invitations to fewer than the maximum intended sample size at the time of study invitation, so no sampling was undertaken and all eligible patients from those practices were invited to participate.
If the actual sample size differed from the originally intended sample size for some other reason (for example, because of poor recruitment or revision of the target sample size), the explanation should be given.
All of these subgroup analyses were underpowered, and even the full trial was much smaller than intended (the intended sample size was 1,620; achieved was 838).
Whereas a census survey was conducted in 2001, as intended, the analyzed data represent 64% of the intended sample in 1999.
