The authors consider variance estimation for the generalized regression estimator in a two-phase context when the first-phase sample has been restratified using information gathered from the first-phase sample. Simple computational expressions for variance estimation are provided for the double expansion estimator and the reweighted expansion estimator of Kott & Stukel (1997). These estimators are compared using data from the Canadian Retail Commodity Survey.
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Mt Sinai Hosp, Samuel Lunenfeld Res Inst, Toronto, ON M5T 3L9, CanadaMt Sinai Hosp, Samuel Lunenfeld Res Inst, Toronto, ON M5T 3L9, Canada
Chen, Zhijian
Craiu, Radu V.
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Univ Toronto, Dept Stat, Toronto, ON, CanadaMt Sinai Hosp, Samuel Lunenfeld Res Inst, Toronto, ON M5T 3L9, Canada
Craiu, Radu V.
Bull, Shelley B.
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Mt Sinai Hosp, Samuel Lunenfeld Res Inst, Toronto, ON M5T 3L9, Canada
Univ Toronto, Dalla Lana Sch Publ Hlth, Toronto, ON, CanadaMt Sinai Hosp, Samuel Lunenfeld Res Inst, Toronto, ON M5T 3L9, Canada