primary variable

(redirected from primary outcome variable)

primary variable

A term used in clinical trials for the outcome variable specified in the study protocol that is of greatest importance to the trial’s primary objective, and usually the one used in the sample size calculation.
References in periodicals archive ?
2000598) the scientists screened 1,277 approved applications for animal experiments in Switzerland as well as a random sample of 50 scientific publications resulting from these animal experiments for reporting of seven basic measures against bias (allocation concealment, blinding, randomization, sample size calculation, inclusion/exclusion criteria, primary outcome variable, and statistical analysis plan) and found that none of these criteria were mentioned in more than 20% of applications and none were reported in more than 35% of publications.
The primary outcome variable was pediatric hospice staff technical efficiency.
The primary outcome variable was treatment failure, defined as the occurrence of more than two episodes of vomiting in the 24 hours after the first dose.
We chose a slightly unconventional primary outcome variable (need for subsequent stomach wash) in our study for two reasons: (1) lack of uniform definition of 'feed intolerance', particularly in term and near-term neonates and (2) difficulty in documenting the outcome like regurgitation and nausea/retching.
The primary outcome variable was mortality at 30 days from hospital admission.
The primary outcome variable was the delayed recall score from the Rey Auditory Verbal Learning Test (AVLT).
The measure for the primary outcome variable of openness to future smoking consisted of respondents who had never smoked and answered "definitely yes," "probably yes," or "probably no" to:
Smith at Duke, targeted all-cause mortality as the primary outcome variable.
This potential problem applies also to chance imbalances at baseline for the primary outcome variable.
The CAPS-2 (symptom version) change from baseline to end point served as the primary outcome variable of the study.
The primary outcome variable was the proportion of subjects without recurrence of heartburn or acid regurgitation after 6 months.
The primary outcome variable was the change of the sum score of the U PDRS parts II and III between baseline and 3-month visits.