Case Control Study
Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastrointest Pharmacol Ther. Aug 6, 2014; 5(3): 183-190
Published online Aug 6, 2014. doi: 10.4292/wjgpt.v5.i3.183
Table 1 Clinical effects of aspirin in high risk population (clinical trials) n (%)
CharacteristicsPatients in the analysisPatients excluded from the analysisP
Patients with esophageal adenocarcinoma
n83120
Age [mean (SD)], yr73 (SD = 11.3)73 (SD = 11.5)1.00
Male gender73 (61)58 (70)0.19
Current smokers44 (37)33 (40)0.66
Cig. Cons. (in PY) [mean (SD)]22.5 (SD = 30.2)22.1 (SD = 27.3)0.92
Alcohol abusers32 (27)21 (25)0.96
BMI ≥ 2557 (48)40 (47)0.96
Presence of hiatus hernia73 (61)52 (63)0.91
Ischemic heart disease40 (33)27 (33)0.97
Use of aspirin17 (14)12 (14)0.88
Low socioeconomic status26 (22)18 (22)0.87
Dur of reflux [in Y-mean (SD)]28.5 (SD = 10.1)27.8 (SD = 12.2)0.66
Freq of refl (d/wk) [mean (SD)]5.4 (SD = 2.4)5.4 (SD = 2.6)1.00
Patients with Barrett’s esophagus
n426521
Age [mean (SD)], yr68 (SD = 14)68 (SD = 13)1.00
Male gender264 (62)316 (61)0.73
Current smokers136 (32)174 (33)0.68
Cig. Cons. (in PY) [mean (SD)]19.8 (SD = 28.4)20.3 (SD = 29.4)0.79
Alcohol abusers108 (25)130 (25)0.95
BMI ≥ 25232 (54)283 (54)0.98
Barrett’s length (in cm)6.6 (SD = 3.9)6.6 (SD = 3.7)1.00
Presence of hiatus hernia304 (71)371 (71)0.98
Ischemic heart disease83 (19)99 (19)0.92
Use of aspirin87 (20)109 (21)0.91
Low socioeconomic status69 (16)83 (16)0.98
Dur of reflux [in Y-mean (SD)]16.1 (SD = 9.9)16.4 (SD = 10.2)0.65
Freq of refl (d/wk) [mean (SD)]5.1 (SD = 2.3)5.1 (SD = 2.5)1.00