Table 2.

Results of the Random Effects Model With the Return to Play Event Rate and Confidence Interval.

Study	Event Rate	Lower Limit	Upper Limit	Z Value	P Value
Meredith, 2013	0.333	0.043	0.846	−0.566	.571
Maroon, 2013	0.867	0.595	0.966	2.464	.014
Brigham, 2013	0.917	0.378	0.995	1.623	.105
Maroon, 2007	0.750	0.238	0.966	0.951	.341
Andrews, 2008	0.684	0.452	0.851	1.567	.117
	0.738	0.567	0.858	2.652	.008