. 2019 Nov 13;8(22):e013794. doi: 10.1161/JAHA.119.013794

Table 5.

Adjusted Association Between TAVR Center Volume, Compared With a Non‐TAVR Center, on Discharge Disposition, Length of Stay, and 30‐Day Readmission After SAVR

	Low volume OR (95% CI)^a	Medium Volume OR (95% CI)^a	High Volume OR (95% CI⁾ ^a	P Value^b
Discharge disposition^c
Routine	Ref	Ref	Ref	···
Transfer, short term hospital	1.85 (1.19–2.88)	2.23 (1.46–3.40)	2.60 (1.51–4.47)	0.002
Transfer, skilled nursing facility	0.95 (0.87–1.03)	0.89 (0.82–0.97)	0.91 (0.81–1.03)	0.10
Died	0.69 (0.54–0.88)	0.72 (0.57–0.91)	0.43 (0.29–0.63)	<0.0001
30‐d readmission^d	0.94 (0.86–1.04)	0.96 (0.87–1.05)	0.98 (0.87–1.12)	0.64

	CIE (95% CI)^a	CIE (95% CI)^a	CIE (95% CI)^a	P Value^b
Length of stay, d	−0.02 (−0.22 to 0.19)	−0.19 (−0.38 to 0.00)	0.01 (−0.25 to 0.28)	0.14

CIE indicates change in estimate; OR, odds ratio; SAVR, surgical aortic valve replacement; TAVR, transcatheter aortic valve replacement.

Wald test assessing whether effect of undergoing surgery at TAVR center on outcomes differs across TAVR volume, degrees of freedom=3.

Adjusted for year of surgery, age, sex, primary insurance, median household income in the patient's zip code, Charlson comorbidity index, hospital teaching status, and hospital size; age, and Charlson comorbidity index were modeled as a restricted quadratic splines.

Compared with routine discharge.

Only assessed among patients discharged alive after SAVR.