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Baseline characteristics responders and non-responders
| Characteristics | Responders | Non-responders | p value |
|---|---|---|---|
| Gender, M/F (%F) | 81/279 (77.5) | 7/56 (88.9) | 0.04 |
| Age (years), mean (SD) | 49.8 (14.2) | 43.6 (15.6) | 0.002 |
| ASA I/II (%II) | 169/191 (53.1) | 34/29 (54.0) | 0.30 |
| Center general/academic (% academic) | 289/71 (17.2) | 54/9 (16.7) | 0.31 |
SD standard deviation, ASA American Society of Anesthesiologists classification
