Table 3. Meta-regression examining factors associated with between study heterogeneity in the odds of suicide in high-risk strata.

	Coefficient	Standard error	Lower limit	Upper limit	Z-value	p-value
Year of publication	0.014	0.011	-0.007	0.035	1.27	0.20
Base rate of suicide	-2.61	2.38	-7.28	2.06	-1.09	0.27
Length of follow-up	<0.001	0.003	-0.007	0.007	0.01	0.99
Number of variables initially examined	0.005	0.002	0.002	0.008	2.91	0.004
Number of variables in high-risk model	0.007	0.012	-0.016	0.03	.63	0.53