Dear Pedro Saavedra, would you be so kind to give more details about this meeting? Which joint meeting is it? Thank you so much for your attention, Estevam.
-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ Estevam Rafael Hruschka Junior Curitiba - PR Brasil ----- Original Message ----- From: "Pedro Saavedra" <[email protected]> To: <[email protected]> Cc: <[email protected]> Sent: Monday, July 21, 2003 9:52 AM Subject: IMPUTE: Re: Case studies that validated imputed data? > [email protected] writes: > >A friend asked me for examples of case studies that imputed missing data, > >and then afterwards collected the data and validated (or invalidated) the > >imputation model. (He is doing a study of that sort and would like to > >cite other examples.) This is honest missing data, not simulations in > >which data were artificially made missing to check model fit. > > It depends on what you mean by "real missing data". We had a monthly > survey where preliminary results were published before all the data was > in. We tested various imputation schemes and compared results with the > eventual reported values at the final deadline. It was presented by myself > and Paula Weir at the 1992 Joint Meetings, and should be in the > corresponding Proceedings. > > > >
