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You read a study about a new outcome measure assessing quality of life in elderly patients, where one group completed the measure after counseling and educational sessions about stroke, and the other group completed the measure without counseling or education.  There were 24 patients in the study, 12 in each group, who were selected through a convenience sampling procedure.  The researcher conducting the study was not blinded and the evaluator of the data was not blinded.  This study found no difference between the experimental and control group in quality of life due to counseling and education.  Which of the following is not a weakness of this study?

You begin working in a clinic specializing in the management of TMJ.  You conduct multiple searches on Pubmed, and then save your search strategy.  Now, anytime new research articles are released about TMJ, they automatically get sent to you by email.  This is an example of:

Which type of study would be the highest level of evidence assessing the responsiveness of the Berg Balance Scale?

You are reading an article which states there is a correlation of 1.0 between a performance-based measure that tests for fall risk and a patient-reported outcome measure about the concern of risk for falls. This suggests excellent:

A measure assesses activity limitations associated with low back pain.  Analysis of that measure establishes that all activities that might be affected by low back pain are included.  This outcome measure demonstrates excellent:

What would be the problem with a test-retest reliability study that assessed patients’ performance on a measure of cardiovascular performance at the beginning and end of their hospital stay? 

Which psychometric property refers to an outcome measure’s ability to measure the characteristic or feature it is intended to measure?

A) Define contrast and resolution in Microscopy (2 points)B) Include when contrast is important and when resolution is important. (When would you setup a microscope for contrast and when would you would setup a microscope for resolution?) (2 points)

Electrophoretic separation (electrophoresis) of particles depends on two forces.  They are: (check all that apply)

You are designing an assay to determine the concentration of Solution ABC using Beer’s Law.  First, you perform an absorption spectrum analysis of Solution ABC, which is shown below.  To determine concentrations of unknown Solution ABC, the following should be performed:a) Set the spectrophotometer to read absorbances at wavelength [W] (2 points) b) with the reason being [r].  (2 points)