Sai Calculator
Calculate your Sleep Apnea Index (SAI) based on apnea and hypopnea events during sleep.
Published by:
isCalculator Editorial Team
Reviewed by:
Review Board
Last Updated:
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How to use this tool?
How to Use the SAI Calculator
- Enter Apnea Events: Input the total number of apnea events (breathing pauses) during sleep. Must be a non-negative integer (e.g., 25).
- Enter Hypopnea Events: Input the total number of hypopnea events (shallow breathing). Must be a non-negative integer (e.g., 15).
- Enter Sleep Hours: Input the total hours of sleep recorded. Must be a positive number (e.g., 7.5). Use decimal for partial hours.
- Calculate: Click the "Calculate SAI" button. The formula used is:
SAI = (Apnea + Hypopnea) / Hours. - Interpret Results: The result shows your SAI (events per hour) and its interpretation:
- Less than 5: Normal
- 5 to 14.99: Mild Sleep Apnea
- 15 to 29.99: Moderate Sleep Apnea
- 30 or more: Severe Sleep Apnea
Note: All inputs must be valid numbers. Invalid entries will show red error indicators and prevent calculation.
Previous Results
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Frequently Asked Questions
SAI stands for Sleep Apnea Index, which is the number of apnea and hypopnea events per hour of sleep.
SAI is calculated as (Apnea Events + Hypopnea Events) divided by Total Sleep Hours.
SAI below 5 is normal, 5-14 mild, 15-29 moderate, and 30+ severe sleep apnea. Consult a doctor for diagnosis.
