1. What is the Combined Values Equation?

The Combined Values Equation from the AMA Guides calculates the combined effect of multiple impairment values. This method prevents overestimation when combining multiple disability ratings and ensures accurate assessment of overall impairment.

2. How Does the Calculator Work?

The calculator uses the combined values equation:

Where:

• \( A \) — First impairment value (unitless, 0-1)
• \( B \) — Second impairment value (unitless, 0-1)

Explanation: The equation accounts for the non-additive nature of combining multiple impairments, ensuring the total combined value never exceeds 1 (100% impairment).

3. Importance of Combined Values Calculation

Details: Accurate combined values calculation is crucial for disability assessment, workers' compensation claims, and ensuring fair compensation based on the AMA Guides impairment rating system.

4. Using the Calculator

Tips: Enter impairment values A and B as decimal values between 0 and 1. For example, 15% impairment would be entered as 0.15.

5. Frequently Asked Questions (FAQ)

Q1: Why use this specific equation for combining values?
A: This equation prevents overestimation of total impairment when combining multiple disability ratings, as required by the AMA Guides.

Q2: How do I convert percentage values to decimal?
A: Divide the percentage by 100. For example, 25% becomes 0.25, 7.5% becomes 0.075.

Q3: Can I combine more than two values?
A: Yes, by applying the equation sequentially. Combine A and B first, then combine that result with C, and so on.

Q4: What is the maximum possible combined value?
A: The maximum combined value approaches but never reaches 1.0 (100% impairment) regardless of how many values are combined.

Q5: Are there any limitations to this method?
A: This method assumes impairments are independent. For interdependent conditions, different combining methods may be required as specified in the AMA Guides.