Table 2.
Patient and Procedural Characteristics of the Update Data Set and the External Validation Data Set
| Update Data Set (n = 1847) | External Validation Data Set (n = 3822) | |
|---|---|---|
| Age, y, mean (SD) | 47 (16) | 50 (17) |
| Female gender | 1023 (55) | 2059 (54) |
| Current smoking | 595 (32) | 1145 (31) |
| History of PONV | 452 (25) | 737 (28) |
| Motion sickness | 182 (10) | 234 (9) |
| High-risk surgery | 292 (16) | 546 (15) |
| Inhalational anesthesia | 1126 (61) | 1971 (52) |
| Outpatient surgery | 644 (35) | 928 (24) |
| PONV occurrence within 24 hours | 653 (35) | 1340 (47) |
Values are presented as No. (%), unless stated otherwise. PONV, postoperative nausea and vomiting.