Retrospective Cohort Study
Copyright ©The Author(s) 2017.
World J Gastrointest Endosc. Jul 16, 2017; 9(7): 296-303
Published online Jul 16, 2017. doi: 10.4253/wjge.v9.i7.296
Table 1 Baseline characteristics of patients included n (%)
VariableJuly/August/SeptemberApril/May/June
Total number of ERCPs30653183
Post-ERCP pancreatitis404 (13.2)402 (12.6)
Age (mean ± SD)58.9 ± 0.859.5 ± 0.9
Female1672 (54.6)1617 (50.8)
Charleston Comorbidity Score
0190 (6)131 (4)
1-2490 (16)550 (17)
> 22385 (78)2503 (79)
Race
Caucasian1834 (64)1967 (66)
African American395 (14)441 (15)
Hispanic411 (14)311 (11)
Asian or Pacific Islander123 (4)96 (3)
Native American15 (1)23 (1)
Other98 (3)130 (4)
Median income ($) in zip code
1-38999836 (28)865 (28)
39000-47999636 (22)688 (22)
48000-63999726 (24)845 (27)
64000+819 (27)732 (23)
Hospital region
Northeast791.8 (26)819.5 (26)
Midwest679.2 (22)918.1 (29)
South997.6 (33)925.5 (29)
West596.9 (19)520.4 (16)
Hospital bed size
Small293.2 (10)343.3 (10)
Medium680.2 (22)728 (23)
Large2092 (68)2112 (67)
Hospital location
Rural43.2 (1)20.4 (1)
Urban3022 (99)3163 (99)
Table 2 Incidence and incidence rates of patients who develop post-endoscopic retrograde cholangiopancreatography pancreatitis in the early vs late academic year
Incidence n (%)Adjusted OR (95%CI)P value
July/August/SeptemberERCPs performed30651.03 (0.71-1.51)0.415
Post-ERCP Pancreatitis rates404 (13.2)
April/May/JuneERCPs performed3183
Post-ERCP Pancreatitis rates402 (12.6)
Table 3 Mortality rate in patients who develop post-endoscopic retrograde cholangiopancreatography pancreatitis in the early academic year compared to the late academic year
Mortality
Adjusted OR (95%CI)P value
n/total%
July/August/September5/4041.2433.2 (0.55-1980.7)0.092
April/May/June14/4023.48
Table 4 Length of stay and total hospitalization charges in patients who develop post-endoscopic retrograde cholangiopancreatography pancreatitis in the early academic year compared to the late academic year
Length of stay
Total charges
Mean (95%CI) (d)P valueMean (95%CI) ($)P value
July/August/September10.6 (8.5-12.7)0.91101904 (78785-125023)0.938
April/May/June10.4 (8.2-12.6)100519 (70214-130824)