22 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
it has a narrow focus ... Calculation #Table #PPV ... #NPV #Formulas ... #Statistics #Matrix
Arterial Lines & Waveforms
Arterial lines permit continuous invasive blood pressure measurement, frequent arterial blood sampling, and
working properly • Normal ... PRESSURE VARIATION (PPV ... Pressure Variation (PPV ... volume (increased PPV
Common Bile Duct (CBD) on Abdominal Ultrasound

The key to finding CBD is to look anteriorly to
stretched out portal ... tube above the PV ... clinical #ultrasound #pocus ... #normal #RUQ
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
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
NegativePredictiveValue #NPV ... Biostatistics #statistics
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease

Positive
PositivePredictiveValue #PPV ... Biostatistics #statistics
IDSA Recommendations for Preventing Human Papillomavirus Infections and Cervical Cancer Screening for Women with in HIV-AIDS
Recommendations
Pap tests are normal ... (Pap test and HPV ... First Episode of HPV ... Schedules • HPV ... and 6 months #HPV
Oral Cavity Lesions in a patient with HIV/AIDS
White plaque
 - Pseudo-membranous candidiasis
 - Oral hairy leukoplakia
Oral Cavity Lesions ... candidiasis - Oral ... Mass - Wart (HPV ... Darcy_ID_doc #Oral
Pemphigus vulgaris (PV) is an autoimmune, intraepithelial, blistering disease affecting the skin and mucous membranes. It
Pemphigus vulgaris (PV ... captopril can trigger PV ... with drug-induced PV ... differentiate PV ... less common than PV