Incidence, Patient-Related Risk Factors, and Outcomes of Postoperative Pneumonia after Cholecystectomy: A Population-Based Cohort Study
Table 1
General demographics of the study subjects.
Variable
Non-postop pneumonia ()
Postop pneumonia ()
value
Age
<0.0001
Mean (SD)
56.52 (15.98)
65.84 (15.53)
Sex
<0.0001
Female
145566 (52.72%)
2902 (47.92%)
Male
130562 (47.28%)
3154 (52.08%)
Surgical type
<0.0001
OC
88337 (31.99%)
2593 (42.82%)
LC
187791 (68.01%)
3463 (57.18%)
Preoperative clinical parameter
Hypertension
56134 (20.33%)
1804 (29.79%)
<0.0001
DM
39845 (14.43%)
1587 (26.21%)
<0.0001
CAD
30922 (11.20%)
1085 (17.92%)
<0.0001
CVA
15923 (5.77%)
913 (15.08%)
<0.0001
COPD
13922 (5.04%)
1501 (24.79%)
<0.0001
Hemodialysis
5557 (2.01%)
258 (4.26%)
<0.0001
Liver cirrhosis
2963 (1.07%)
195 (3.22%)
<0.0001
Obesity
2702 (0.98%)
44 (0.73%)
0.0562
CHF
2416 (0.87%)
125 (2.06%)
<0.0001
A -test or chi-square test was used to examine the differences in the demographic characteristics of cholecystectomy patients. OC: open cholecystectomy; LC: laparoscopic cholecystectomy; DM: diabetes mellitus; CAD: coronary artery disease; CVA: cerebrovascular disease; COPD: chronic obstructive pulmonary disease; CHF: congestive heart failure.
