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Table 1 ASA physical status of patients with reported incidents

From: Composition and risk assessment of perioperative patient safety incidents reported by anesthesiologists from 2009 to 2019: a single‐center retrospective cohort study

ASA No. of patients with incidents No. of patients without incidents % of patients with incidents Risk ratio (95% CI)
I 78 105,467 0.074 1.00
II 253 118,620 0.213 2.88 (2.24 to 3.72)*
III 89 14,332 0.617 8.40 (6.19 to 11.39)*
IV 37 981 3.635 51.00 (34.31 to 75.80)*
V 5 78 6.024 86.68 (34.16 to 219.91)*
  1. *p < 0.05. CI: confidence interval. ASA: American Society of Anesthesiologists
  2. Since the ASA data of patients without incidents were available only after 2013 due to technological issues (the electronic anesthesia record system in PUMC Hospital was established in 2013, so the ASA status of patients without reported incidents could only be collected after 2013), only data from 2013 to 2019 were used for the analysis related to ASA status