Table 4.

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

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

^aAbbreviations: IQR interquartile range, SURPAS Surgical Risk Preoperative Assessment System

^bMissing was due to no responses to the survey for the given question

†Since the risk estimates were skewed, the P values were calculated by Wilcoxon rank sum and bolded when less than 0.05