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American Society of Anesthesiologists (ASA) Physical Classification Spectrum
| ASA classification | All surgerya (%) | CPA (%) | NS (%) |
|---|---|---|---|
| 1 | 5.9 | 4.0 | 29.1 |
| 2 | 34.3 | 37.6 | 60.2 |
| 3 | 45.6 | 51.0 | 8.6 |
| 4 | 7.0 | 4.4 | 0.1 |
| 1–4E | 7.3 | 3.0 | 2.1 |
aThe dataset used to calculate “All surgery” was different than the denominator dataset in this study
