DISTRIBUTIONS Flashcards
1
Q
+/- 2 standard deviations from the mean; encompasses 95% of non diseased individuals; basically, normal distribution
A
reference range
2
Q
non gaussian; either positive or negative
A
skewed distributions
3
Q
higher mean than normal
A
negative skewness
4
Q
lower mean than normal
A
positive skewness
5
Q
2 peaks
A
bimodal distribution
6
Q
threshold values for lab test results so that when the value is beyond the decision levels, the clinical should respond in some way
A
decision levels
7
Q
what are the problems with reference range?
A
using the upper and lower boundaries as rigidly defining normal isn’t medically correct
-5% of population falls out of reference range but considered normal
