Equation Review Flashcards
1
Q
Odds ratio (for case-control studies)
A
a/c / b/d = ad/bc
2
Q
Relative risk
A
a/(a+b) / c/(c+d)
3
Q
Attributable Risk
A
= a/a+b - c/c+d
4
Q
NNT
A
1/absolute risk reduction
5
Q
Number needed to harm
A
1/Attributable risk
6
Q
Volume of distribution
A
Vd = amt of drug in body / plasma drug concentration
7
Q
Half life
A
t1/2 = 0.7 x Vd / Clearance
8
Q
Drug clearance
A
Clearance = rate of elimination / plasma drug concentration
= Vd x Ke (elimination constant)
9
Q
Loading dose
A
LD = Cp x Vd / F
10
Q
Maintenance Dose
A
D = Cp x CL x tau / F
11
Q
MAP
A
MAP = CO x TPR
= 2/3 diastolic + 1/3 systolic
12
Q
Stroke Volume
A
SV = EDV - ESV
13
Q
EF %
A
EF = SV /EDV
14
Q
Effective renal plasma flow
A
ERPF = UpahxV/Ppah = Cpah
15
Q
Renal blood flow
A
RBF = RPF / 1-hct
