Table 2. Perioperative step data.

Category	Preoperative [IQR]	Postoperative [IQR]	P value
All patients	3,907 [2,628–5,213]	2,782 [1,757–3,826]	0.024
BMI
≥30	3,835 [2,701–5,202]	2,118 [1,468–2,950]	<0.001
<30	4,227 [1,998–5,613]	3,276 [2,104–4,606]	0.49
Age
≥65	4,868 [2,449–5,614]	3,228 [1,923–4,529]	0.055
<65	3,835 [2,628–5,036]	2,484 [1,627–3,156]	0.15