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diagnosis epidemiology biostatistics calculations mnemonic negativepredictivevalue positivepredictivevalue sensitivity specificity challenges comparison criticalcare fluid icucard management matrix responsiveness table testing tolerance
Important Biostatistics and Epidemiology Equations Sensitivity = TP / (TP + FN) = true positives / disease
and Epidemiology Equations ... Biostatistics #statistics ... #calculations # ... #specificity #PPV ... #NPV
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease Positive
Predictive Value Calculation ... PositivePredictiveValue #PPV ... Biostatistics #statistics ... #Epidemiology #Equations ... #calculations #
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
Predictive Value Calculation ... NegativePredictiveValue #NPV ... Biostatistics #statistics ... #Epidemiology #Equations ... #calculations #
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
NegativePredictiveValue #Calculation ... #Table #PPV #NPV ... #Formulas #Statistics
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 USMLE Epidemiology and Biostatistics Summary Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
PPV: proportion ... prevalence is low, then PPV ... NPV: proportion ... specificity -> higher PPV ... sensitivity -> higher NPV
Fluid Responsiveness and Fluid Tolerance Testing - OnePager Summary Fluid resuscitation can be beneficial when required or
Pressure Variation (PPV ... pulse pressure (PPV ... using proprietary formulas ... is analogous to PPV ... is analogous to PPV
Perform computations online at: ScyMed.com 6th ED ICU-card «ICU, Formulas & Drugs» HEMODYNAMIC PATTERNS Condition SAP CVP PAP PCWP CO C(a-v)02 PVR SVR Hypovolemic shock ↓ ↓ ↓ ↓ ↓ ↑ ↑ ↑ Cardiogenic shock ↓ 1 ↑ 1 1 ↑ Septic shock ↓ ↓ ↓ ↓ ↑ ↓ ↓ ↓ Cardiac Tamponade . ↑ ↑ 1 ↓ → ↑ RV
ICU-card «ICU, Formulas ... BV 3-5.1 L PV ... Arterial Pressure PP ... values units equation
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