Table 4.

Powers and type I errors for the meta-design in Table 1

		n18 = n28 = 4000		n18 = n28 = 4500		n18 = n28 = 5000
Model	a0	Power	Type I error	Power	Type I error	Power	Type I error
Random effects	0	0.765	0.043	0.811	0.040	0.850	0.038
	0.00625	0.787	0.047	0.831	0.045	0.866	0.042
	0.0125	0.801	0.050	0.843	0.047	0.874	0.044
	0.015	0.805	0.051	0.846	0.048	0.876	0.045
	0.025	0.814	0.054	0.855	0.050	0.883	0.047
	0.0375	0.819	0.055	0.860	0.052	0.887	0.049
	0.05	0.821	0.057	0.862	0.053	0.889	0.051
	0.075	0.826	0.058	0.865	0.055	0.892	0.052
	0.1	0.829	0.059	0.867	0.056	0.893	0.053
	0.15	0.831	0.060	0.870	0.057	0.894	0.054
	0.2	0.833	0.060	0.871	0.058	0.895	0.055
Fixed effects	0	0.768	0.044	0.817	0.042	0.853	0.039
	0.1	0.787	0.045	0.831	0.044	0.864	0.040
	0.15	0.799	0.049	0.842	0.047	0.872	0.044
	0.2	0.809	0.052	0.853	0.050	0.878	0.046
	0.25	0.819	0.054	0.858	0.053	0.884	0.050
	0.3	0.826	0.057	0.865	0.055	0.888	0.051
	0.35	0.834	0.059	0.871	0.057	0.894	0.053
	0.4	0.840	0.061	0.876	0.059	0.896	0.055