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Attributable Risk Calculator [Risk Factor Due To Disease Exposure]
ByStevenTo find attributable risk, subtract the incidence rate in the unexposed group from the incidence rate in the exposed group. Formula: AR = Ie – Iu Table of Variables Variable Meaning AR Attributable Risk Ie Incidence in Exposed Group Iu Incidence in Unexposed Group What is an Attributable Risk Calculator | Find The Risk Factor…
3 Rep Max Calculator [ 3RM Calculator 2025 ]
ByStevenTo find your 3 rep max, multiply your one rep max (1RM) by 0.93. Formula: 3RM = 1RM × 0.93 Table of Variables Variable Meaning 3RM Three Rep Max 1RM One Rep Max What is a 3 Rep Max Calculator? Let’s say you’re in the gym, standing over the barbell, psyching yourself up for a…
Number Needed to Treat Calculator (NNT)
ByStevenTo find the number needed to treat, take 1 and divide it by the absolute risk reduction. Formula: NNT = 1 ÷ ARR Table of Variables Variable Meaning NNT Number Needed to Treat ARR Absolute Risk Reduction What is a Number Needed to Treat Calculator | NNT Calculator 2025 Let’s say there’s a new drug…
Likelihood Ratio Calculator [Odds, Probability, Ratio]
ByStevenTo find the Positive Likelihood Ratio, divide sensitivity by (100 minus specificity). For the Negative Likelihood Ratio, divide (100 minus sensitivity) by specificity. Formula: Positive LR = SE ÷ (100 – SP)Negative LR = (100 – SE) ÷ SP Table of Variables Variable Meaning SE Sensitivity (%) SP Specificity (%) LR Likelihood Ratio What is…
Focal Width/Length Calculator
ByStevenTo calculate the focal length (f), use the formula f=−R/2f = -R / 2, where RR is the radius of curvature. This formula is particularly useful for lenses and curved mirrors to determine their focal length based on the curvature. The Focal Width/Length Calculator is a practical tool for determining the focal length of lenses…