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Table 4 Median and interquartile range of risk estimates stratified by response to surgeon survey question related to the SURPAS tool

From: The value of the “Surgical Risk Preoperative Assessment System” (SURPAS) in preoperative consultation for elective surgery: a pilot study

Questiona   30-day mortality Overall morbidity Unplanned Readmission
N Median (IQR) P value† Median (IQR) P value† Median (IQR) P value†
Was the surgical risk provided from SURPAS:
 The same 94 < 0.1 (< 0.1–0.2) < 0.0001 1.8 (1.3–4.9) < 0.0001 1.9 (1.3–3.3) < 0.0001
 Less 26 0.2 (0.1–0.5)   6.3 (3.2–14.9)   4.5 (3.0–8.6)  
 Greater than you expected it to be 36 0.7 (0.2–1.9)   10.7 (5.3–14.4)   5.9 (3.7–7.4)  
 Missing‡ 24       
On a scale of 1–4, please circle the number that best reflects your opinion of the risk document given to the patient?
 It was not helpful 18 < 0.1 (< 0.1- < 0.1) < 0.0001 1.6 (1.0–1.8) < 0.0001 1.8 (1.2–1.9) < 0.0001
 It was somewhat helpful 44 0.1 (< 0.1–0.3)   2.8 (1.5–5.8)   2.3 (1.4–4.4)  
 It was helpful 91 0.1 (< 0.1–0.5)   4.1 (1.7–11.2)   3.3 (1.9–5.9)  
 It was very helpful 20 0.4 (0.1–2.0)   11.9 (3.9–22.4)   5.6 (3.7–9.8)  
 Missingb 7       
Did using the SURPAS tool change the interaction with the patient during the preoperative clinic visit?
 No 87 < 0.1 (< 0.1–0.2) < 0.0001 1.9 (1.4–5.3) < 0.0001 1.9 (1.43–3.7) < 0.0001
 Yes 85 0.2 (< 0.1—1.1)   5.5 (2.8–12.3)   4.0 (2.3–6.5)  
 Missingb 8       
If yes: Did you find the change to be:
 Detrimental 0 0 (0–0) 0.72 0 (0–0) 0.33 0 (0–0) 0.37
 Neutral 4 0.1 (0.1–1.4)   3.1 (1.3–9.9)   2.8 (1.3–5.3)  
 Beneficial 80 0.2 (< 0.1–1.1)   5.5 (2.9–12.6)   4.1 (2.3–6.7)  
 Missingb 1       
  1. aAbbreviations: IQR interquartile range, SURPAS Surgical Risk Preoperative Assessment System
  2. bMissing was due to no responses to the survey for the given question
  3. †Since the risk estimates were skewed, the P values were calculated by Wilcoxon rank sum and bolded when less than 0.05