Dear Prof Roger, Thanks a lot for that suggestion!
Kind regards, Amitha. On Mon, Oct 19, 2020 at 1:51 PM Roger Bivand <roger.biv...@nhh.no> wrote: > On Mon, 19 Oct 2020, Amitha Puranik wrote: > > > Hello everyone! > > > > I have data on the proportion of screening of cervical cancer at > > district-level. I have about 530 data points out of the 545 districts. I > > want to get a complete picture of the data in order to obtain the spatial > > cluster map using LISA (local indicators of partial autocorrelation). > > > > Would it be alright if I impute the missing values of the proportion for > > the 15 districts using multiple imputation? > > Please do not even consider imputation of this kind of data, especially if > LISA is your tools. It makes no sense at all. > > If, however, you model the screening proportions at district level, and > have a model that fits well using multiple well-observed covariates, both > INLA and other model fitting approaches can predict for unobserved > responses. However, in such cases, the model will have used the spatial > autocorrelation already (for example in a BYM model, see for example here: > http://www.paulamoraga.com/book-geospatial-info/), so putting the > posterior distributions at unobserved locations into a LISA makes no > sense, because the imputation alrready uses spatial autocorrelation. > Modelling, if you have relevant covariates, and model preferably using > Poisson reression offset by log size of age-selected female population, > makes much more sense than LISA. > > Hope this helps, > > Roger > > > > > Or is there a better way for imputation in this case? > > > > Any suggestion/ comment is highly appreciated! > > > > Regards, > > Amitha > > > > [[alternative HTML version deleted]] > > > > _______________________________________________ > > R-sig-Geo mailing list > > R-sig-Geo@r-project.org > > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > > > > -- > Roger Bivand > Department of Economics, Norwegian School of Economics, > Helleveien 30, N-5045 Bergen, Norway. > voice: +47 55 95 93 55; e-mail: roger.biv...@nhh.no > https://orcid.org/0000-0003-2392-6140 > https://scholar.google.no/citations?user=AWeghB0AAAAJ&hl=en > [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo