Displaying 5 results from an estimated 5 matches similar to: "Getting the same values of adjusted mean and standard errors as SAS"
2007 Feb 10
2
error using user-defined link function with mixed models (LMER)
Greetings, everyone. I've been trying to analyze bird nest survival
data using generalized linear mixed models (because we documented
several consecutive nesting attempts by the same individuals; i.e.
repeated measures data) and have been unable to persuade the various
GLMM models to work with my user-defined link function. Actually,
glmmPQL seems to work, but as I want to evaluate a suite of
2008 Aug 13
1
re placing default labels in lattice
Dear all,
I am having a little trouble deciphering how to change the default x-axis
labels in a lattice xyplot (or any type of lattice plot for that matter). I
have tried using the "demo("labels") function but the code is truncated at
precisely the wrong moment!
All I am trying to do is to add superscript to two of the labels for which i
tried using the expression function. It
2004 Feb 26
1
Distance and Aggregate Data - Again...
I appreciate the help I've been given so far. The issue I face is
that the data I'm working with has 53000 rows, so in calculating
distance, finding all recids that fall within 2km and summing the
population, etc. - a) takes too long and b) have no sense of progress.
Below is a loop that reads each recid one at a time, calculates the
distance and identifies the recids that fall within 2
2009 Jul 24
1
metafor
I had found the author's (Wolfgang Viechtbauer) earlier meta-analytic code in R, MiMa, useful. so I have been exploring metafor using an example dataset from MiMa. metafor provides a lot more. However, MiMa provided parameter estimates, standard errors, z values, etc. for individual moderators in the meta-analysis, but I don't see how to obtain these from metafor. Have you any help
2012 Nov 27
4
Fitting and plotting a coxph with survfit, package(surv)
Hi Dear R-users
I have a database with 18000 observations and 20 variables. I am running
cox regression on five variables and trying to use survfit to plot the
survival based on a specific variable without success.
Lets say I have the following coxph:
>library(survival)
>fit <- coxph(Surv(futime, fustat) ~ age + rx, data = ovarian)
>fit
what I am trying to do is plot a survival