"targeted sample" is a correct and usable phrase in written English.
It is typically used to refer to a sample that has been selected or chosen based on specific criteria. For example, "The researchers developed a targeted sample of participants with experience in the field."
Thus a well targeted sample of 108 will give an estimate to within 0.5 logits with 99% confidence.
From the remaining 79 transcripts (discussed by 94 participants in 20 focus groups) a specifically targeted sample was drawn.
Allowing for a potential drop out of 10%, increased the total targeted sample to a recruitment sample of 380 participants.
A well targeted sample is one in which the person distribution closely matches the item distribution when they are both calibrated on the same metric scale.
The study was underpowered to examine various study endpoints because the study was terminated before targeted sample size (158 cases) was reached.
Targeted sample size of 50 was calculated based on a power analysis for the above repeated measures analysis using G*Power 3.1 software, estimating a medium effect size, α = .05, power = 0.8, two groups, two measurements, correlation between measures = 0.5, and nonsphericity correction = 1.
Targeted sample monitoring is also conducted with selected test centres providing recorded tests for second-marking by Principal Markers.
Targeted sample sizes are based on power calculations.
Targeted sample size of 30 subjects in each group provided 90% power to detect a 20% difference (2.2 mmol/L) in SSPG concentration.
The sample population represented the target population well as for breed and sex, and the targeted sample size (152) was close to the obtained (132).
We also reviewed the targeted sample size reported in trial registries.
