Case Control Study
Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastroenterol. Jun 14, 2014; 20(22): 6939-6945
Published online Jun 14, 2014. doi: 10.3748/wjg.v20.i22.6939
Table 1 Demographic characteristics of patients n (%)
VariableGroup 1Group 2P value
Cases10016-
Age (yr)33.1 ± 11.543.1 ± 12.30.043
Tumor size (cm)6.5 ± 3.55.8 ± 2.0NS
SymptomsNS
Abdominal pain41 (41)6 (37.5)
Abdominal discomfort17 (17)2 (12.5)
Palpable abdominal mass17 (17)0
No symptoms24 (24)8 (50.0)
Jaundice1 (1)0
Location of tumorsNS
Head31 (31)7 (43.7)
Neck21 (21)2 (12.5)
Body and Tail6 (6)2 (12.5)
Tail37 (37)5 (31.3)
The uncinate process4 (4)0
Head and tail1 (1)0