The control values for both controls for the prothrombin test were ranging between the mean and ±1 SD for the first 19 days of use. Starting on day 20, the values for both were consistently between +1 and +2 SDs. This is an example of a:
a. Shift
b. Trend
c. Random error
d. Predictable error
ANS: A
If all results are consistently different from the previous in the same direction, then it indicates a shift in the methodology has occurred. A trend would show a gradual change over time. This is neither a predictable error nor a random error because it is consistent.
Health Professions
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Medicare claims must be submitted:
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A medical assistant who tells a patient that another physician is incompetent is an example of ________.
A. assault B. libel C. fraud D. defamation of character
Health Professions