This prospective, double-blind, randomized, sham-controlled trial was designed to control for patient and investigator bias in assessing symptomatic improvement after percutaneous myocardial laser revascularization (PMLR) therapy.
Research studies are designed to control for and rule out these potential confounding factors by having the therapists provide two different treatments.
Integrated IRT models are designed to control for precisely this issue.
Treatments to preserve artwork are usually designed to control for known target species.
Visual presentations were designed to control for motoric and stimulus properties.
Similarly, use of a first-pass procedure designed to control for the endogeneity of strikes fails to resurrect the Blanchard-Phillipon result.
The inclusion of nonwords is designed to control for guessing, with nonword errors subtracted from correct word performance for an overall score (Mochida & Harrington, 2006).
A second experiment was designed to control for the effect of cocaine concentration in blood per unit of time.
A second drawing task, designed to control for drawing ability across participants, was given with the same instructions, except participants could look at and manipulate the robot as a reference while they drew.
Future studies should be designed to control for potentially confounding variables and assess the differences in range of motion after total ankle replacement.
They were scanned on four occasions during the fast learning stage as well as in a condition designed to control for internally guided movements.
