Table 2. Description of Aspirin Use and Duration among Cases and Controls .

Duration of use	Total	Cases	Controls	P Value
Ever Aspirin user	203 (20.38%)	107 (22.77%)	96 (18.25%)	0.077
Aspirin user more than 1 year	154 (15.46%)	82 (17.45%)	72 (13.69%)	0.101
Aspirin user more than 5 year	85 (8.53%)	48 (10.21%)	37 (7.03%)	0.073
Aspirin user more than 10 year	28 (2.83%)	17 (3.62%)	11 (2.11%)	0.150