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. Author manuscript; available in PMC: 2007 Mar 2.
Published in final edited form as: Stat Med. 2007 Feb 28;26(5):1055–1068. doi: 10.1002/sim.2593

Table 3.

Estimated means and variance-covariance matrix for vigorous exercise

Variable Estimated Mean using ACs Estimated Mean from ML
BMI (Y ) 21.294 21.287
Vigorous exercise reported by child (X1) 0.972 0.974
Vigorous exercise reported by mother (X2) 0.791 0.787
∑ using ACs
Y X1 X2
Y 10.975 −0.282 −0.391
X1 −0.282 0.939 0.187
X2 −0.391 0.187 0.439
∑ from ML
Y X1 X2
Y 10.989 −0.317 −0.358
X1 −0.317 0.937 0.170
X2 −0.358 0.170 0.436