• Jakob Kleif and Ismail Gögenur.
• Department of Surgery, Nordsjællands Hospital, Copenhagen University Hospital, Hillerød, Denmark. Electronic address: kleifen@dadlnet.dk.
• J. Surg. Res. 2018 May 1; 225: 101-107.

BackgroundThe quality of recovery-15 (QoR-15) is a patient-reported outcome measurement measuring QoR after surgery and anesthesia. The scale is arbitrary and ranges from 0 to 150. We aimed to classify the QoR-15 score into four severity classes; excellent, good, moderate, and poor recovery.Materials And MethodsData from one prospective observational cohort study and two randomized clinical trials were merged and comprised 276 adult patients with an American Society of Anesthesiologists class of I-III undergoing acute laparoscopic surgery for suspected appendicitis. Merged data were split into a "training" set and a "validation" set. Optimal cutoff points for classifying the QoR-15 into excellent, good, moderate, and poor recovery were identified in the "training" set. The four severity classes according to the QoR-15 score were validated in the "validation" set using prespecified hypotheses.ResultsThe QoR-15 scores for excellent, good, moderate, and poor recovery were 136-150, 122-135, 90-121, and 0-89, respectively. A better severity class of recovery based on the QoR-15 score measured repeatedly six times over 30 d was associated with an increased chance of resuming recreational and occupational activities (P < 0.001). Patients with a better severity class of recovery on the first postoperative day had a lower incidence of postoperative complications within 30 d of surgery (P = 0.001).ConclusionsAfter surgery and anesthesia, patients can be classified as being in poor, moderate, good, or excellent recovery based on the QoR-15 score.Copyright © 2018 Elsevier Inc. All rights reserved.

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