22 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
Biostatistics #statistics ... Epidemiology #Equations #calculations ... #specificity #PPV ... #NPV
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
NegativePredictiveValue #NPV ... Biostatistics #statistics ... Epidemiology #Equations #calculations
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
Calculation #Table #PPV ... #NPV #Formulas ... #Statistics #Matrix
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease

Positive
PositivePredictiveValue #PPV ... Biostatistics #statistics ... Epidemiology #Equations #calculations
Pap Smear Algorithm 
#Diagnosis #Pap #Smear #Test #Cervical #HPV #Screening #PrimaryCare #Management #Vaccination #Gynecology
Pap Smear Algorithm ... Test #Cervical #HPV
Genital Ulcer - Differential Algorithm
Painful
 - H. ducreyi (Chancroid)
 - HSV
Painless
 - T pallidum (Chancre)
 -
- Differential Algorithm ... Chlaymydia - HPV ... #Differential #Algorithm
Non-Invasive Ventilation (BiPAP) Algorithm - Indications and Contraindications
Indications for NIV:
 • COPD - pH <7.35, pCO2
Ventilation (BiPAP) Algorithm ... Indications for NIV ... Contraindications for NIV ... observation) #NIV ... Ventilation #BiPAP #Algorithm
Oral Cavity Lesions in a patient with HIV/AIDS
White plaque
 - Pseudo-membranous candidiasis
 - Oral hairy leukoplakia
Mass - Wart (HPV ... Differential #Diagnosis #Algorithm
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
PPV: proportion ... NPV: proportion ... specificity -> higher PPV ... sensitivity -> higher NPV ... Biostatistics #formulas #calculations
COVID-19 RESPIRATORY PATHWAY ALGORITHM
Awake proning may help with oxygenation
Permissive hypoxemia, if closely monitored and in the
RESPIRATORY PATHWAY ALGORITHM ... RESPIRATORY #Support #ALGORITHM ... #NIV #Coronavirus