. Author manuscript; available in PMC: 2015 May 1.

Published in final edited form as: Int J Biostat. 2014;10(1):59–75. doi: 10.1515/ijb-2013-0031

Table 1. Monte Carlo Relative Efficiency of Locally Efficient Augmented GEE to Suboptimal Augmented GEE.

Continuous clustered outcomes. Working Marginal Covariance (WMCov): Exchangeable (Exch). Outcome Regression (OR): Correct (C), Model 1(M1), Model 2 (M2). First entry $σ_{b}^{2} = 0$ , second entry $σ_{b}^{2} = 6$ . All estimators use exchangable working covariance for V(Y|A) and V{(Y|X,A)}.

Cluster Size = 2,4,6,8,10,12
	Correlation among X_ij

WMCov/OR	0.25	0.50	0.75	1.00
Exch/C	1.0115	1.0450	1.0907	1.1464
	1.0036	0.9991	1.0010	1.0085
Exch/M1	1.0062	1.0089	1.0064	1.0038
	1.0006	1.0008	1.0018	1.0019
Exch/M2	1.0114	1.0448	1.0905	1.1462
	1.0036	0.9990	1.0009	1.0083

Cluster Size =10,20,30,40,50
	Correlation among X_ij

Cov/OR	0.25	0.50	0.75	1.00
Exch C	1.0356	1.1096	1.1563	1.2259
	1.0005	0.9999	1.0002	1.0011
Exch M1	1.0126	1.0081	1.0050	1.0032
	1.0000	1.0000	1.0001	1.0003
Exch M2	1.0352	1.1090	1.1556	1.2247
	1.0006	0.9998	1.0001	1.0009