Equations Flashcards
1
Q
sensitivity
A
TP/(TP+FN)
2
Q
specificity
A
TN/(TN+FP)
3
Q
PPV
A
TP/(TP+FP)
4
Q
NPV
A
TN/(FN+TN)
5
Q
odds ratio (case control)
A
(a/c)/(b/d) = ad/bc
6
Q
relative risk
A
(a/(a+b))/(c/(c+d))
7
Q
attributable risk
A
a/(a+b) - c/(c+d)
8
Q
NNT
A
1/absolute risk reduction
9
Q
NNH
A
1/attributable risk
10
Q
hardy-weinberg equilibrium
A
p^2+2pq+q^2 = 1
p + q = 1
11
Q
volume of distribution
A
amount of drug in body/plasma drug concentration
12
Q
half-life
A
(0.693xvolume of distribution)/clearance
13
Q
clearance
A
rate of elimination of drug/plasma drug concentration
= Vd x Ke (elimination constant)
14
Q
loading dose
A
(Cp x Vd)/F
15
Q
maintenance dose
A
(Cp x CL x tau)/F
