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Important Biostatistics and Epidemiology Equations Sensitivity = TP / (TP + FN) = true positives / disease
Important Biostatistics ... = Rule IN #Biostatistics ... #specificity #PPV ... #NPV
USMLE Epidemiology and Biostatistics Summary Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Epidemiology and Biostatistics ... Proves cause-effect ... PPV: proportion ... specificity -> higher PPV ... #Epidemiology #Biostatistics
Causes of Vertigo - Differential Diagnosis Algorithm #Diagnosis #Neurology #Dizziness #Peripheral #Central #Algorithm #BPPV #Differential #Ddxof
Causes of Vertigo ... Central #Algorithm #BPPV
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
correctly diagnose a case ... that any given case ... it has a narrow focus ... Calculation #Table #PPV ... #NPV #Formulas
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 Causes of Post-Partum Fever - Differential Diagnosis Algorithm 6 W's for causes of PPF - Wind: pneumonia,
Causes of Post-Partum ... Algorithm 6 W's for causes ... of PPF - Wind ... PostPartum #Fever #PPF ... Diagnosis #Algorithm #Causes
Causes of Prolonged PT (INR), Prolonged PTT • Prolonged PT (INR), Prolonged PTT • Prolonged PT
Causes of Prolonged ... #Prolonged #PPT ... Diagnosis #Algorithm #Causes
Arterial Lines & Waveforms Arterial lines permit continuous invasive blood pressure measurement, frequent arterial blood sampling, and
PRESSURE VARIATION (PPV ... Pressure Variation (PPV ... intrathoracic pressure and causes ... volume (increased PPV
Causes of Nausea and Vomiting - Differential Diagnosis Framework Chemoreceptor Trigger Zone/Area Postrema: • Drugs: - Chemo agents -
Causes of Nausea ... Labyrinthitis • BPPV ... Malignancy #nausea ... differential #diagnosis #causes
Internal Jugular Vein Rouleaux Flow on POCUS Amazing video of a dilated IJV showing Rouleaux flow. Whenever
Rouleaux Flow on POCUS ... significantly, it causes ... echogenic as in this case ... for underlying cause ... Jugular #IJ #Vein #POCUS
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 Causes of Vitamin B12 Deficiency - Cobalamin Decreased Intake Pancreas: Insufficiency Intestine: SIBO, Celiac disease, IBD, Lymphoma, Amyloidosis, Resection,
Causes of Vitamin ... : Medications (PPI ... differential #diagnosis #causes
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