Table VI.

Hospital characteristics in patients with early versus late intervention

Hospital characteristics	Early (<5 d)	Late (≥5 d)	P value
Teaching status
Surgery residents	83.2% (6,936/8,339)	16.8% (1,403/8,339)	<.001
No surgery residents	82.1% (28,524/34,740)	17.9% (6,216/34,740)
Surgical volume (intestinal obstruction cases/per year)
Very high (245–915)	85.8% (8,909/10,384)	14.2% (1,475/10,384)	<.001
High (169–244)	83.7% (9,079/10,845)	16.3% (1,766/10,845)
Medium (112–168)	85.7% (9,642/11,250)	14.3% (1,608/11,250)
Low (8–111)	83.3% (8,830/10,600)	16.7% (1,770/10,600)
Bed size
Very large hospital (525–2,170)	86.4% (9,066/10,496)	13.6% (1,430/10,496)	<.001
Large hospital (319–524)	85.5% (8,735/10,213)	14.5% (1,478/10,213)
Medium hospital (199–317)	83.9% (9,391/11,198)	16.1% (1,807/11,198)
Small hospital (25–198)	83.0% (9,268/11,172)	17.0% (1,904/11,172)