Adjusted Neck Circumference

This questionnaire calculates the probability of you being diagnosed with Obstructive Sleep Apnea (OSA) by adjusting your neck circumference based on your history of hypertension, habitual snoring and witnessed apnea.

What is your neck circumference (in centimeters)? cm
Do you have a history of hypertension (high blood pressure)?
Do you have a history of habitual snoring?
Do you have a history of witnessed apnea (stopping breathing during sleep)?

Interpretation of ANC Score

Less than 43:
Low probability of sleep apnea

43 - 48:
Intermediate probability of sleep apnea (4 - 8 times higher chance of having OSA)

Greater than 48:
High probability of sleep apnea (20 times higher chance of having OSA)