[R] Specifying special poisson maximum likelihood

u. Denis _____ Denis Aydin, MSc Swiss Tropical and Public Health Institute Socinstrasse 57, P.O. Box 4002 Basel, Switzerland T +41 (0)61 284 86 09 F +41 (0)61 284 81 01 denis.ay...@unibas.ch _ Postal address: Denis Aydin, MSc Swiss Tropical and Public Health

[R] Backward elimination in regression

Dear all I want to run a simple multiple linear regression model, say: mod <- lm(y~x1+x2+x3+x4) I have programmed a custom algorithm to calculate the p-values, because there is clustering present. I ordered the variables according to their p-value and want to stepwise eliminate the variables

[R] Calculating odds ratios from logistic GAM model

ate the odds ratio for age (in this example) based on the spline? For example the odds ratio based on the spline between the age of, say, 20-30? Or even better: How can I plot the odds ratios against age in a continuous form? Many thanks for your help. Best, Denis Aydin

[R] lmer output

rees of freedom? Thanks for your help. Regards, Denis Aydin -- This email and any files transmitted with it are confide...{{dropped:8}} __ R-help@r-project.org mailing list https:

[R] Remove missing observations

ength". Is there a fast method to remove those subjects with missing outcomes? Thanks for any help. Regards, Denis Aydin _____ Denis Aydin, MSc Swiss Tropical and Public Health Institute Socinstrasse 57, P.O. Box 4002 Basel, Switzerland T +41 (0)61 2

[R] Longitudinal analysis: contrasting time points

x27;d like to know which years are different from each other. Normally, I would do an ANOVA with a TukeyHSD-posthoc test, but I'm not sure how to do this with repeated measurements over time and a nested design. Could anybody help me on this? Thanks for any help. Regards, Denis Ayd

[R] Statistical question about logistic regression simulation

real data. 3. Are there general flaws or errors in my approach? Thanks a lot for any help on this! All the best, Denis -- Denis Aydin Institute of Social and Preventive Medicine at Swiss Tropical Institute Basel Associated Institute of the University of Basel Steinengraben 49 – 4051 Basel –

[R] Generating logistic regression data for specific ORs

how to generate the exposure vectors in a way that the logistic regression has a specific beta1 or OR. In particular, I want the control over the parameters of the exposure distributions of cases and controls. Could anyone help me on that? Any help is appreciated. Denis -- Denis Aydin Instit

[R] Problem with mathematical expression and loop

Hi to all I use a loop to plot 9 different histograms of 9 different transformations of one dataset (x). I want to label the histograms with the mathematical expression of each transformation (e.g. x^3). For that I've prepared a vector with the labeling names for "expression". > trans.expr

[R] Own classes in "histogram"

k named ">25"? Thanks for any help! Regards, Denis __ Denis Aydin mailto:[EMAIL PROTECTED] Mittwoch, 16. Januar 2008, 14:56 __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide

[R] fisher.test, chisq.test

Hi, I want to analyse a contigency table (3 x 12) with a fisher.test beacause there are cells that are less than 5. Ämmen Anken Baf Belchen Höchi Hof Porti Räm Schmutz Schön Sissa Tann class14 726 150 246 68 126 66 331 7 61 class24 7 6 55

[R] save as pdf

? Thank you very much! Best, Denis __ Denis Aydin mailto:[EMAIL PROTECTED] Montag, 22. Oktober 2007, 12:01 __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org