Table 2: Comparison of selected items in high and low case volume units.

HCV units ( 𝑛 = 2 3 )LCV units ( 𝑛 = 3 9 ) 𝑃 value

Number of PUB cases17891244not applicable
Mean number of PUB cases/endoscopists/month3.2 ± 1.12.4 ± 0.9ns

Item% ( 𝑛 )% ( 𝑛 )

Endoscopic haemostatic treatment
 In Forrest Ia, Ib, and IIa86 (613)68 (327)0.001
 In Forrest IIb45 (154)39 (97)0.015
Endoscopic treatment modality in Forrest Ia, Ib, and IIa
 Injection monotherapy46 (285)65 (311)0.001
 Haemoclip or thermocoagulation monotherapy20 (121)16 (51)0.002
 Combination34 (207)19 (61)0.001
Acid-suppressant therapy after endoscopy with i.v. PPI
 Overall79 (1413)81 (1002)0.490
In patients with Forrest I-II
 With standard dosages28 (494)48 (601)0.001
 With bolus + continuous PPI50 (888)33 (415)0.001
Rebleeding rate10.1 (179)9.5 (118)0.680
Need for surgery5.1 (92)6.4 (79)0.181
Mortality
 Overall2.7 (48)4.3 (53)0.023
 In Forrest Ia, Ib6.8 (29)7.6 (21)0.791