12 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
and Epidemiology Equations ... Specificity = SPIN ... Biostatistics #statistics ... #Epidemiology #Equations ... #specificity #PPV
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease

Positive
PositivePredictiveValue #PPV ... Biostatistics #statistics ... #Epidemiology #Equations
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
NegativePredictiveValue #NPV ... Biostatistics #statistics ... #Epidemiology #Equations
Specificity Calculation - Probability that a test correctly identifies those without the disease (true negative rate)

Specificity
Disease Absent SPIN ... Biostatistics #statistics ... #Epidemiology #Equations
Sensitivity Calculation - Probability that a test correctly identifies those with the disease (true positive rate)

Sensitivity
Biostatistics #statistics ... #Epidemiology #Equations
Pustular Skin Lesions - Differential Diagnosis Framework

What are pustules?
• Pustules < 5-10 mm + pus
• Material
Pustular Skin Lesions ... to inflammatory skin ... osteitis) - Pustular skin ... illness • Drug eruption ... #Pustular #Skin
Pigmented Purpuric Dermatoses (PPD) - Capillaritis

Group of chronic, benign, cutaneous eruptions characterized by the presence of
Purpuric Dermatoses (PPD ... benign, cutaneous eruptions ... and increased skin ... and increased skin ... deposited into the skin
Disorders of Pigmentations - Hypopigmentation and Hyperpigmentation - Differential Diagnosis Algorithm

HYPOPIGMENTATION
Diffuse Congenital - Generalized hypopigmentation of
Differential Diagnosis Algorithm ... of hair, eyes, skin ... cutaneous drug eruption ... Hyperpigmentation #disorders #skin ... Differential #Diagnosis #Algorithm
Vesiculobullous Skin Rash - Differential Diagnosis Algorithm
Vesicles Fragile/EasiIy Ruptured - Intraepidermal blisters, possibly crusts/erosions
 - Inflammatory
Vesiculobullous Skin ... Differential Diagnosis Algorithm ... Phototoxic drug eruption ... Differential #Diagnosis #Algorithm
Eczematous Skin Rash - Differential Diagnosis Algorithm
Eczematous - Pruritic/Scaly/Erythematous lesions. Usually poorly demarcated
 • Atopic Dermatitis
Eczematous Skin ... Differential Diagnosis Algorithm ... - Erythematous eruption ... Differential #Diagnosis #Algorithm