Schulman AR, Abougergi MS, Thompson CC. Assessment of the July effect in post-endoscopic retrograde cholangiopancreatography pancreatitis: Nationwide Inpatient Sample. World J Gastrointest Endosc 2017; 9(7): 296-303 [PMID: 28744341 DOI: 10.4253/wjge.v9.i7.296]
Corresponding Author of This Article
Christopher C Thompson, MD, MSc, FACG, FASGE, Director of Therapeutic Endoscopy, Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women’s Hospital, 75 Francis St., ASB II, Boston, MA 02115, United States. cthompson@hms.harvard.edu
Research Domain of This Article
Gastroenterology & Hepatology
Article-Type of This Article
Retrospective Cohort Study
Open-Access Policy of This Article
This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
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 (%)
Variable
July/August/September
April/May/June
Total number of ERCPs
3065
3183
Post-ERCP pancreatitis
404 (13.2)
402 (12.6)
Age (mean ± SD)
58.9 ± 0.8
59.5 ± 0.9
Female
1672 (54.6)
1617 (50.8)
Charleston Comorbidity Score
0
190 (6)
131 (4)
1-2
490 (16)
550 (17)
> 2
2385 (78)
2503 (79)
Race
Caucasian
1834 (64)
1967 (66)
African American
395 (14)
441 (15)
Hispanic
411 (14)
311 (11)
Asian or Pacific Islander
123 (4)
96 (3)
Native American
15 (1)
23 (1)
Other
98 (3)
130 (4)
Median income ($) in zip code
1-38999
836 (28)
865 (28)
39000-47999
636 (22)
688 (22)
48000-63999
726 (24)
845 (27)
64000+
819 (27)
732 (23)
Hospital region
Northeast
791.8 (26)
819.5 (26)
Midwest
679.2 (22)
918.1 (29)
South
997.6 (33)
925.5 (29)
West
596.9 (19)
520.4 (16)
Hospital bed size
Small
293.2 (10)
343.3 (10)
Medium
680.2 (22)
728 (23)
Large
2092 (68)
2112 (67)
Hospital location
Rural
43.2 (1)
20.4 (1)
Urban
3022 (99)
3163 (99)
Table 2 Incidence and incidence rates of patients who develop post-endoscopic retrograde cholangiopancreatography pancreatitis in the early vs late academic year
Incidence n (%)
Adjusted OR (95%CI)
P value
July/August/September
ERCPs performed
3065
1.03 (0.71-1.51)
0.415
Post-ERCP Pancreatitis rates
404 (13.2)
April/May/June
ERCPs performed
3183
Post-ERCP Pancreatitis rates
402 (12.6)
Table 3 Mortality rate in patients who develop post-endoscopic retrograde cholangiopancreatography pancreatitis in the early academic year compared to the late academic year
Mortality
Adjusted OR (95%CI)
P value
n/total
%
July/August/September
5/404
1.24
33.2 (0.55-1980.7)
0.092
April/May/June
14/402
3.48
Table 4 Length of stay and total hospitalization charges in patients who develop post-endoscopic retrograde cholangiopancreatography pancreatitis in the early academic year compared to the late academic year
Length of stay
Total charges
Mean (95%CI) (d)
P value
Mean (95%CI) ($)
P value
July/August/September
10.6 (8.5-12.7)
0.91
101904 (78785-125023)
0.938
April/May/June
10.4 (8.2-12.6)
100519 (70214-130824)
Citation: Schulman AR, Abougergi MS, Thompson CC. Assessment of the July effect in post-endoscopic retrograde cholangiopancreatography pancreatitis: Nationwide Inpatient Sample. World J Gastrointest Endosc 2017; 9(7): 296-303