Topic C (continued) and Topic D Flashcards
Reliability tests of this type involve performing 2 separate forms of the same test at the same time. Reliability is determined by the degree to which the sets of scores coincide.
Parallel forms
_______ describe the amount of variance that occurs randomly. The lesser the variance, the greater it is and the greater the ______ of the results.
Precision
Reliability
_____ and _____ tests are used in research protocol and involve screening for a particular condition. They are used to evaluate the cut-off value of a parameter to be used in a study.
Sensitivity and specificity
Sensitivity evaluation in research is the proportion of:
Afflicted individuals who test positive
Specificity evaluation in research is the proportion of:
Non-afflicted individuals who test negative
While ______ variables are data with #s (such as # of clinical visits), _____ variables are data with underlying continuous scales (such as blood pressure).
Numerical discrete
Numerical continuous
______ sampling evaluates if each segment of the population will be represented in the sample. To assure this, selection should be done via the process known as _______ so that characteristics of the sample group approximates the characteristics of the whole population.
Probability
Randomization
______ sampling is done when there is NO way of forecasting that each element of the population will be represented in the sample. Such cases where this sampling is used include accident cases (such as take cases as they arrive on scene (ER)).
Non-probability sampling
______ sampling is when units/subjects are purposely selected in the same ratio as they are found in the general population.
Quota
______ ______ ______ (r) measures the degree to which the points in a scatter diagram cluster about a straight line.
Linear correlation coefficient
These type of charts are arranged either horizontally or vertically in ascending or descending order.
Bar charts
Block diagram in which the blocks are proportional in area to the frequency in each class or group and summarizes data from a process that has been collected overtime. The tallest block is the group with the highest frequency of a given parameter indicated on the x-axis.
Histogram
Study in which neither the subject NOR the researcher know which group is receiving the Tx and which the placebo, completely removing bias from the research.
Double blind study
The rate of death
Mortality
The rate of incidence of disease
Morbidity