523 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
Biostatistics #statistics ... #specificity #PPV ... #NPV
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
correctly diagnose a case ... that any given case ... Calculation #Table #PPV ... #NPV #Formulas ... #Statistics #Matrix
Causes of Nausea and Vomiting - Differential Algorithm #Diagnosis #EM #IM #Causes #Nausea #Vomiting #Differential #NonGI
Causes of Nausea ... - Differential Algorithm ... Diagnosis #EM #IM #Causes ... #Nausea #Vomiting ... Differential #NonGI #Algorithm
Causes of Encephalopathy - Differential Diagnosis Algorithm
Hyperacute:
 - Primary Neurologic: Vascular (IS, ICH), Seizure, Migraine, Trauma
Causes of Encephalopathy ... Differential Diagnosis Algorithm ... Degenerative, NPH ... Differential #Diagnosis #Algorithm ... #Causes
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
Causes of Facial Weakness - Differential Diagnosis Algorithm
Forehead Sparing = Central cause
  - Most commonly
Causes of Facial ... Differential Diagnosis Algorithm ... Sparing = Central cause ... Differential #Diagnosis #Algorithm ... #Causes #neurology
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... PPV: proportion ... NPV: proportion ... sensitivity -> higher NPV ... but not on the causal
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
Causes of Hypercalcemia - Differential Diagnosis Algorithm

#Hypercalcemia #Differential #Diagnosis #Algorithm #Causes
Causes of Hypercalcemia ... Differential Diagnosis Algorithm ... Differential #Diagnosis #Algorithm ... #Causes