STOP BANG sleep apnoea questionnaire and severity of OSA (severe)
Current model predicts the severity of Obstructive Sleep Apnea (OSA) as defined by the apnea/hypoapnea index (AHI) based on the STOP-BANG questionnaire.
OSA severity is measured in 4 categories; 
  • None (AHI <5/hr)
  • Mild (AHI ≥5/hr to <15/hr)
  • Moderate (AHI ≥15/hr to <30/hr)
  • Severe (≥30/hr)
Research authors: Robert J Farney, Brandon S Walker, Robert M Farney, Gregory L Snow, James M Walker
Details Formula Study characteristics Files & References
Model author
Model ID
Revision date
MeSH terms
  • Obstructive Sleep Apnea
  • Sleep Apnea
  • Polysomnography
  • Model type
    Custom model (Conditional)
    Condition Formula

    Additional information

    All patients referred to the Intermountain Sleep Disorders Center at LDS Hospital, Salt Lake City, Utah (elevation 1,500 m) who underwent diagnostic polysomnography for any reason from January 2006 to December 2008 were eligible for inclusion

    Study Population

    Total population size: 1426
    Males: {{ model.numberOfMales }}
    Females: {{ model.numberOfFemales }}

    Continuous characteristics

    Name Mean SD Unit
    BMI 33.8 8.1 kg/m^2
    Age 49.7 15.2 years
    Neck size 40.7 4.8 cm
    STOP-Bang score 4.3 1.7 points
    AHI 32.9 30.1 /hour

    Categorical characteristics

    Name Subset / Group Nr. of patients
    Snoring No 542
    Yes 884
    Tired/Sleepy No 157
    Yes 1269
    Observed Apnea No 742
    Yes 684
    Pressure No 827
    Yes 599
    STOP BANG sleep apnoea questionnaire and severity of OSA (severe)
    Refer to Intended Use for instructions before use
    Evidencio B.V., Irenesingel 19, 7481 GJ, Haaksbergen, the Netherlands

    Related files

    No related files available

    Probability of AHI ≥ 30/hour =

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    Notes are only visible in the result download and will not be saved by Evidencio

    Probability of AHI ≥ 30/hour = %

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    Outcome stratification

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    Conditional information

    Result interpretation

    The STOP-Bang model may be useful to categorize OSA severity, triage patients for diagnostic evaluation or exclude from harm.

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    Calculations alone should never dictate patient care, and are no substitute for professional judgement. See our full disclaimer.

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