Table 3. Meta-analysis results for models 1 to 3 from the linear mixed model for the log odds ratio of surviving under experimental treatment compared to the control treatment using data for 17 trials [42].

	Model 1	Model 2	Model 3
Covariance structures Between random time effects (Σ)	Indepa	CSb	HAR(1)c
Within-study errors (Si)	Indep	Indep	Indep
Log odds ratio estimates
Month 6	0.22 (0.02, 0.43)	0.22 (-0.01, 0.45)	0.22 (0.02, 0.43)
Month 12	0.39 (0.22, 0.57)	0.41 (0.21, 0.61)	0.39 (0.21, 0.57)
Month 18	0.49 (0.27, 0.71)	0.50 (0.25, 0.74)	0.47 (0.21, 0.72)
Month 24	0.40 (0.04, 0.76)	0.38 (0.12, 0.65)	0.42 (0.05, 0.78)
Between study variance estimates
Month 6	0.00	τ2 = 0.03	0.00
Month 12	0.00		0.01
Month 18	0.00		0.05
Month 24	0.20		0.23
Model Fit
AICd	121.3	119.6	120.5

^aIndep = Independence

^bCS = Compound Symmetry

^cHAR(1) = Heteroscedastic autoregressive (1)

^dAIC = Akaike Information Criterion