Secondary outcome measure	Number of included studies	Effect of pattern	Results of meta-analysis			I²	P
Secondary outcome measure	Number of included studies	Effect of pattern	RR	95% CI	P	I²	P
Incidence of myocardial infarction	17 [8] [9] [11] [12] [14] - [26]	Random	0.85	0.75 - 0.97	<0.01	63.0	<0.01
Incidence of gastrointestinal bleeding	12 [9] [11] [12] [14] [17] [19] [20] [21] [23] [24] [25] [26]	Random	1.62	1.35 - 1.93	<0.01	79.0	<0.01
Mortality rate	17 [8] [9] [10] [11] [12] [14] [16] - [26]	Fixed	0.97	0.93 - 1.02	0.20	0	0.66