Table 3.

Risk of Bias Assessment for Cohort Studies (based on modified Newcastle-Ottawa scale) of Beta-Blockers after TBI

Study	Selection	Comparability	Outcome	Total Score
Arbabi et al., 2007(48)	***	**	**	7/9
Cotton et al., 2007(49)	***	*	**	6/9
Inaba et al., 2008(50)	***	**	**	7/9
Ko et al. 2016(51)	***	**	**	7/9
Mohseni et al. 2015(52)	***	**	**	7/9
Murry et al. 2016(53)	***	–	**	5/9
Schroeppel et al., 2010(54)	***	**	**	7/9
Schroeppel et al., 2014(55)	***	**	**	7/9
Zangbar et al. 2015(56)	***	**	**	7/9
Salim et al., 2008(57)	**	**	**	6/9
Hadjizacharia et al., 2011(58)	***	–	**	5/9
Bukur et al., 2012(59)	***	**	**	7/9
Riordan et al., 2007(60)	**	*	**	5/9

Lower Total Score means Higher Risk of Bias.