The Vancouver Sleep and Breathing Centre

 

PROBABILITY OF HAVING OSA

 

Note: The following section is interactive and can only be viewed through Internet Explorer 3.0 or higher.

The following is an Estimate of Pretest Probability of Obstructive Sleep Apnea (OSA).

 

Age (in years):

Height (in meters):

To convert from inches to meters, please enter your height in inches here and

Weight (in Kilograms):

To convert from pounds to kilograms, please enter your weight in pounds here and

If you have high blood pressure enter 1.35 (default = 0):

If you have been told that you stop breathing for longer than 10 seconds at a time when asleep enter 2.95 (default = 0):

Total OSA Risk Factor:

 

Total Risk Factor

Probability of OSA

< 11

<5%

11 - 12.5

5 - 20%

12.5 - 14

20 - 50%

14 - 15

50 - 75%

15 - 16

75 - 90%

> 16

> 90%

 

This is not an exact estimate. The prediction formula does not take account of individuals who are born with small jaws or other features that increase their risk of having OSA.

When in doubt, always consult a qualified physician.

Dynamic Nasopharyngoscopy
Epworth Sleepiness Scale
Calculated Probability of Having OSA
Sleep Study
Stanford Method for Predicting OSA

 

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