Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.

Acute nonvariceal upper-GI hemorrhage (NVUGIH) is associated with significant morbidity and mortality.', 'To examine the relationship between hospital volume and outcomes of NVUGIH.', 'A cross-sectional study.', 'Participating hospitals from the Nationwide Inpatient Sample 2004.', 'All discharged patients with a primary discharge diagnosis of NVUGIH based on the International Classification of Diseases, Clinical Modification, ninth edition codes.', 'Patients were divided into 3 groups based on discharge from hospitals with annual discharge volumes of 1 to 125 (low), 126 to 250 (medium), and >250 (high).', 'In-hospital mortality, length of stay, and hospitalization charges.', 'The study included a total of 135,366, 132,746, and 123,007 discharges with NVUGIH occurred from low-volume, medium-volume, and high-volume hospitals, respectively. On multivariate analysis, when adjusting for age, comorbidity, and the presence of complications, patients at high-volume hospitals had significantly lower in-hospital mortality (odds ratio [OR] 0.85 [95% CI, 0.74-0.98]) than patients at low-volume hospitals. Patients at high-volume hospitals were also more likely to undergo upper-GI endoscopy (OR 1.52 [95% CI, 1.36-1.69]) or early endoscopy within 1 day of hospitalization compared with low-volume hospitals (60.5% vs 53.8%, adjusted OR 1.28 [95% CI, 1.02-1.61]). Undergoing endoscopy within day 1 was associated with shorter hospital stays (-1.08 days [95% CI, -1.24 to -0.92 days]) and lower hospitalization charges (-$1958 [95% CI, -$3227 to -$688]).
Is higher hospital volume associated with lower mortality in acute nonvariceal upper-GI hemorrhage?