<prompt> The Epwoh scale is used for assessing:Body mass indexVital capacity in Post operative patientsSleep apneaRisk of embolism in perioperative patient  <response>: The Epwoh Sleepiness Scale ESS and the STOP-Bang questionnaires have not been validated in outpatient primary care settings but are quick and easy to use. The ESS measures daytime sleepiness, with a score of 10 indentifying individuals who warrant additional investigation scale. Ref Harrison 19th edition pg 1721 