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Questionnaire Dwelling Unit-Level and Person Pair-Level Sampling ...

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Table C.4a 2006 QDU Weight GEM Modeling Summary (Model Group 4: West)<br />

Extreme Weight Proportions Bounds 4<br />

Modeling Step 1 % Unweighted % Weighted % Outwinsor UWE 2 # Covariates 3 Nominal Realized<br />

sel.qdu.ps<br />

2.08 1.83 0.38 2.906 270 (0.62, 2.25) (0.63, 2.25)<br />

1.64 2.19 0.43 2.952 267 (0.54, 2.45) (0.55, 2.39)<br />

(0.95, 1.50) (0.95, 1.50)<br />

res.qdu.nr<br />

1.83 2.72 0.52 3.027 279 (1.00, 2.95) (1.00, 2.95)<br />

1.55 2.86 0.51 3.417 267 (1.00, 5.00) (1.00, 4.98)<br />

(1.00, 5.00) (1.00, 2.21)<br />

res.qdu.ps<br />

1.55 2.86 0.51 3.417 270 (0.90, 2.80) (0.97, 2.70)<br />

1.54 2.86 0.35 3.422 267 (0.60, 2.80) (0.83, 1.24)<br />

C-39<br />

(0.95, 1.10) (0.95, 1.07)<br />

GEM = generalized exponential model; QDU = questionnaire dwelling unit.<br />

1 For a key to modeling abbreviations, see Chapter 7, Exhibit 7.1.<br />

2 Unequal weighting effect (UWE) defined as 1 + [(n - 1)/n]*CV 2 , where CV = coefficient of variation of weights.<br />

3 Number of proposed covariates on top line <strong>and</strong> number finalized after modeling.<br />

4 There are six sets of bounds for each modeling step. Nominal bounds are used in defining maximum/minimum values for the GEM adjustment factors. The realized bound is the<br />

actual adjustment produced by the modeling. The set of three bounds listed for each step correspond to the high extreme values, the nonextreme values, <strong>and</strong> the low extreme<br />

values.

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