The phrase "a prior sample" is correct and usable in written English.
It can be used when referring to a sample that was collected or considered before the current one being discussed.
Example: "In our analysis, we compared the results of the current experiment with those obtained from a prior sample."
Alternatives: "an earlier sample" or "a previous sample".
As this was a phase II trial we did not estimate a prior sample size.
However, a prior sample size calculations was reported in only one studies, increasing the risk of false negative outcomes.
A Beta prior is equivalent to specifying a prior mean of α π / based on a prior sample size of α π + β π.
We adapted the last criterion of this scale, i.e., the power of the study, and attributed one point if the authors did a prior sample size calculation.
Participants were eligible for enrollment in the trial if they reported a level of side effect distress on a previously used symptom/side-effect checklist equivalent to the upper 40% of a prior sample [ 21, 22].
This is a repeat cohort study in which we sought to determine whether an association of necrotizing enterocolitis (NEC) <48 hours of a packed red blood cells (PRBC) transfusion was a prior sampling artifact.
For these capture rate analyses, banded individuals from a prior sampling period recaptured during a later period were considered as 'new captures' the first time that they were recaptured.
Let p1 denote the probability that a conversion initiation point lies within a particular window for the prior sample of genealogies (This is the fraction of initiation points that lie within that window).
Although effects of interference expectancy on behavioral performance were not statistically significant in the current sample, it should be noted that evidence was present in a prior pilot sample suggesting that the expectancy manipulation can affect interference control performance.
We restricted these two analyses to women who reported collecting their samples in the a prior defined sampling windows since salivary cortisol concentrations change rapidly in the first hour after waking and incorrectly timed samples can misclassify cortisol profiles (see Additional file 1: Table S1 for a priori defined windows) [ 28].
Computer simulations show that the performance complexity tradeoff is optimized for the phase-based sampling method with a prior importance sampling distribution.
