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. Author manuscript; available in PMC: 2009 Nov 26.
Published in final edited form as: J Off Stat. 2008 Dec 1;24(4):517–540.

Table 4.

Square root of mean square error (RMSE) relative to RMSE of fully-weighted estimator, and true coverage of the 95% CI or PPI of population mean estimator under the model μD that is not consistent with weight trimming. (Dotted line indicates 95% interval for 200 simulations of a binomial with a 95% success rate.)

RMSE relative to FWT True Coverage
n = 100 Variance log10 Variance log10
Estimator −1 0 1 2 3 −1 0 1 2 3
UNWT 471.23 37.73 4.37 0.56 0.39 0 0 0 94 98
FWT 1 1 1 1 1 94 88 88 93 90
TWT3 192.64 15.45 2.04 0.68 0.65 0 0 28 98 96
TWT7 23.49 7.83 2.74 1.09 0.86 0 0 30 82 94
PWT 1.00 1.01 1.08 0.90 0.91 96 88 90 94 96
PWTF1 1.00 0.99 1.17 0.82 0.81 96 88 88 96 96
PWTF2 1.00 1.00 1.13 0.85 0.84 95 90 89 94 96

n = 500

UNWT 1015.9 92.02 9.81 1.01 0.45 0 0 0 58 98
FWT 1 1 1 1 1 96 96 98 95 98
TWT3 415.58 37.64 4.02 0.75 0.66 0 0 0 95 98
TWT7 56.42 17.71 5.79 2.03 0.91 0 0 0 70 96
PWT 1.01 1.00 1.08 0.91 0.80 96 96 94 95 94
PWTF1 1.00 1.01 1.15 0.88 0.70 95 94 92 94 96
PWTF2 1.00 1.00 1.11 0.89 0.80 96 94 93 94 96