biostatistics (formulas)

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soberana - ananda - y1s2t1

10 Terms

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Standard Deviation (SD) =

√[Σ(xᵢ − x̄)² / n]

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Mortality Rate

number of deaths / total population × 10ⁿ

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Case Fatality Rate (CFR)

(Number of deaths / Number of cases) × 10ⁿ

4
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Incidence (I)

new cases / exposed × 10ⁿ

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Prevalence (P)

[(new + old cases) / total population] × 10ⁿ

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Duration of Disease

Dd = P/I

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Range (Amplitude)

At = Xmax - Xmin

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Interquartile Range

IQR = Q3-Q1

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Median

the two middle values (+) then /2

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Variance

Σ(xᵢ − x̄)² / n