Table 2.

Covariates in the meta-regression analysis of AMS studies

Heterogeneous factors	Coefficient	Standard error	t	P
Race of subjects	−0.0415275	0.1847339	−0.22	0.826
Number of subjects	−0.3564554	0.1640766	−2.17	0.049
LLSS cut-off value	−0.0223583	0.1768234	−0.13	0.901
Average age	0.0068726	0.1774487	0.04	0.970
Constant	0.8983218	0.4944899	1.82	0.092

LLSS Lake Louise Scoring System