Table 3.

Median and interquartile range of risk estimates stratified by response to patient 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	70	0.1 (< 0.1–0.3)	0.58	2.7 (1.6–6.6)	0.74	2.3 (1.6–5.1)	0.88
Less	42	0.1 (< 0.1–0.2)		3.5 (1.7–6.5)		2.8 (1.3–4.9)
Greater than you expected it to be	21	0.1 (< 0.1–0.6)		5.0 (1.5–8.7)		3.2 (1.7–5.9)
Missingb	47
On a scale of 1–4, please circle the number that best reflects your opinion of the risk document given to you?
It was not helpful	0	0 (0–0)	0.94	0 (0–0)	0.72	0 (0–0)	0.78
It was somewhat helpful	6	0.1 (< 0.1–1.1)		2.0 (1.1–12.3)		2.0 (1.2–7.5)
It was helpful	51	0.1 (< 0.1–0.4)		3.3 (1.5–10.5)		2.6 (1.5–5.4)
It was very helpful	99	0.1 (< 0.1–0.3)		3.5 (1.7–6.9)		3.0 (1.8–5.1)
Missingb	24
Did seeing the risks make you want to talk to the provider more about your surgery?
No	115	0.1 (< 0.1–0.3)	0.07	2.9 (1.5–6.5)	0.06	2.3 (1.6–5.0)	0.28
Yes	25	0.2 (< 0.1–0.5)		4.0 (2.6–11.5)		3.3 (1.8–6.1)
Missingb	40
Did using the SURPAS tool and seeing the personal risks affect your decision to have or not have the operation?
No	133	0.1 (< 0.1–0.3)	0.30	3.3 (1.6–8.2)	0.40	2.6 (1.7–5.5)	0.26
Yes	27	0.1 (0.1–0.3)		3.9 (1.9–8.9)		3.3 (1.9–5.5)
Missingb	20

^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