The Covariance Adjustment Approaches for Combining Incomparable Cox Regressions Caused by Unbalanced Covariates Adjustment: A Multivariate Meta-Analysis Study

Table 2

MAPE, the coverage probability for 95% W and B, CI, and MSE and %BCI of each estimated beta coefficient in the four proposed methods for different number of studies ().

	Model	MAPE	%BCI	CI
20	ZC	0.236	0.49	W	0.88	0.91	0.72	0.90	0.89
				B	0.74	0.84	0.59	0.83	0.99
	CC	0.229	0.63	W	0.91	0.95	0.87	0.94	0.99
				B	0.77	0.85	0.68	0.85	0.99
	EC	0.233	0.60	W	0.89	0.94	0.82	0.93	0.99
				B	0.72	0.84	0.60	0.82	0.98
	MMC	0.220	0.65	W	0.92	0.95	0.91	0.94	0.99
				B	0.78	0.88	0.88	0.87	0.99
25	ZC	0.218	0.51	W	0.86	0.90	0.75	0.90	0.98
				B	0.69	0.82	0.51	0.79	0.97
	CC	0.216	0.56	W	0.88	0.92	0.81	0.93	0.99
				B	0.74	0.84	0.60	0.82	0.98
	EC	0.217	0.52	W	0.86	0.91	0.73	0.89	0.98
				B	0.68	0.82	0.50	0.79	0.98
	MMC	0.212	0.62	W	0.89	0.92	0.78	0.94	0.99
				B	0.75	0.85	0.65	0.84	0.99
30	ZC	0.219	0.52	W	0.81	0.90	0.64	0.85	0.96
				B	0.63	0.82	0.39	0.78	0.97
	CC	0.214	0.63	W	0.86	0.94	0.71	0.90	0.98
				B	0.68	0.83	0.49	0.81	0.98
	EC	0.215	0.62	W	0.84	0.93	0.68	0.89	0.98
				B	0.66	0.82	0.47	0.79	0.98
	MMC	0.206	0.68	W	0.88	0.95	0.75	0.91	0.99
				B	0.68	0.84	0.51	0.82	0.98
35	ZC	0.208	0.57	W	0.79	0.90	0.61	0.90	0.96
				B	0.56	0.78	0.36	0.78	0.97
	CC	0.198	0.66	W	0.83	0.92	0.70	0.93	0.98
				B	0.64	0.82	0.44	0.82	0.98
	EC	0.197	0.68	W	0.84	0.92	0.72	0.94	0.98
				B	0.65	0.84	0.46	0.87	0.98
	MMC	0.194	0.71	W	0.85	0.94	0.81	0.94	0.99
				B	0.67	0.84	0.54	0.83	0.98
40	ZC	0.197	0.52	W	0.76	0.90	0.56	0.89	0.96
				B	0.57	0.81	0.39	0.77	0.95
	CC	0.174	0.61	W	0.87	0.95	0.76	0.95	0.98
				B	0.75	0.87	0.53	0.85	0.98
	EC	0.170	0.67	W	0.89	0.98	0.78	0.95	0.99
				B	0.79	0.88	0.58	0.87	0.98
	MMC	0.162	0.69	W	0.92	0.98	0.85	0.96	0.99
				B	0.85	0.88	0.61	0.89	0.99
45	ZC	0.201	0.27	W	0.73	0.89	0.47	0.89	0.92
				B	0.52	0.77	0.22	0.75	0.97
	CC	0.177	0.55	W	0.86	0.92	0.73	0.94	0.98
				B	0.72	0.83	0.46	0.84	0.97
	EC	0.168	0.68	W	0.88	0.94	0.78	0.95	0.98
				B	0.73	0.85	0.48	0.84	0.98
	MMC	0.162	0.73	W	0.90	0.95	0.82	0.95	0.99
				B	0.89	0.86	0.54	0.90	0.99

The MAPE and the true coverage probability for 95% W and B and %BCI values for MMC procedure are highlighted by bold font.