# 📟 Calculators

A compilation of useful clinical calculators # ⏱️ 6-Minute Walk Test Calculator

The 6-min walk test is used across rehabilitation settings as a measure of physical function. Due to its simplicity, it can be used in substitute of more complex measures that require more complex equipment.

This study by Enright & Sherrill in 1998 outlines a regression model that can be used to predict normative values based on patient age, height, weight, and sex.

I created a Google Sheet calculator where you can input patient characteristics and generate predicted norms. Give it a shot! # ⚖️ BMI Calculator

This simple Body Mass Index calculator spreadsheet can replace other online resources that calculate BMI. It can be copied into other more commonly-used spreadsheets as a reference spreadsheet

Body Mass Index is calculated with the formula, BMI = kg / m^2, and classifications are based on the most current guidelines from the World Health Organization. # 💉 Blood Pressure Calculator

Use this sheet to find blood pressure classifications based on the newest AHA Guidelines.

Note: 120/80 is now considered Stage 1 Hypertension. See why in the sheet. # 🍎 Diabetes Calculator

This table is based on classification data from the ADA Guidelines regarding popular diagnostic tests for Diabetes.

A1C, Fasting Glucose, and 2-Hour Glucose Tolerance Testing data are all included. # 💦 Exercise Intensity Calculator

This exercise intensity calculator allows you to determine heart rate ranges based on Age, Max Heart Rate, and Resting Heart Rate.

It utilizes two common formulas used to derive HR Max:

[220 - Age]

[208 - Age x 0.7]

It also uses Karvonen's formula, which calculates a target HR based on pre-selected intensity levels. Here is a calculator I put together for Return-To-Sport testing after injury. Included are various measures for four popular hop tests with built-in calculations for side-to-side differences. # 📊 Sensitivity / Specificity / Likelihood Ratio Calculator

Sensitivity, specificity, and likelihood ratios can be tricky concepts to understand and apply. This calculation sheet can help you better understand the meaning behind these terms.

Included in this sheet is a 2x2 table complete with calculations for the following:

Sensitivity

• The proportion of people WITH the condition who get a (+) test. Also known as the True Positive Rate.

Specificity

• The proportion of people WITHOUT the condition who get a (-) test. Also known as the True Negative Rate.

Positive Likelihood Ratio

• How much the odds of the condition increase based on a (+) test

Negative Likelihood Ratio

• How much the odds of the condition decrease based on a (-) test

Positive Predictive Value

• If (+) test, the probability of having the condition

Negative Predictive Value

• If (-) test, the probability of NOT having the condition

Diagnostic Odds Ratio

• Ratio of odds of (+) test if (+) for condition relative to the odds of (+) if (-) for condition.

Risk Ratio

• Ratio of the probability of an outcome in an exposed group to the probability of an outcome in an unexposed group. # 🏥 SPPB Calculator

The Short Physical Performance Battery is a useful assessment of static balance, gait speed, and functional strength. It can paint an effective picture of someone's functional mobility, and can be used in a variety of clinical settings. # ⭐ Star Excursion / Y Balance Test

The Star Excursion Balance Test and Y-balance test are incredibly useful in many clinical settings, though administering these tests can be burdensome. Use this table to easily calculate averages and side-to-side differences with each of these tests. # 📅 Surgery Date Calculator

Calculate days, weeks, and months since surgery or injury with this simple spreadsheet.

This spreadsheet makes use of the =TODAY() function on Google Sheets, which is helpful for tracking a variety of data, as it returns today's date in a cell and updates each day.