Percentage of patients, aged 18 and older, who were surveyed on their patient experience and satisfaction with anesthesia care and who reported a positive experience. This measure will consist of two performance rates: Rate 1: AQI48a: Percentage of patients, aged 18 and older, who were surveyed on their patient experience and satisfaction with anesthesia care Rate 2: AQI48b: Percentage of patients, aged 18 and older, who completed a survey on their patient experience and satisfaction with anesthesia care who report a positive experience with anesthesia care NOTE: The measure requires that a valid survey, as defined in the numerator of AQI48a, be sent to patients between discharge from the facility and within 30 days of facility discharge. To report AQI48b, a minimum number of 20 surveys with the mandatory question completed must be reported. ** In order to be scored on this measure, clinicians must report BOTH AQI48a AND AQI48b. Performance Rate Descriptions: This measure has two performance rates. The first performance rate, AQI48a, describes the percentage of surgical patients who receive a survey of their experience with anesthesia care. The second performance rate, AQI48b, describes the percentage of surgical patients who report a positive experience with anesthesia care.