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Table 4 American Society of Anesthesiologists (ASA) Physical Classification Spectrum

From: Day of surgery cancellation rate after preoperative telephone nurse screening or comprehensive optimization visit

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
  1. aThe dataset used to calculate “All surgery” was different than the denominator dataset in this study