Displaying 20 results from an estimated 300 matches similar to: "Confidence Intervals on Hazard Plots"
2008 Sep 26
1
Computing Mean Lifetime from Hazard
Hello,
If all I have access to is an empirically calculated hazard function, is it possible to compute an approximate value for the mean lifetime?
I know that if the hazard function is essentially constant, the mean lifetime is 1/hazard rate. ?But if I'm confident that the empirical hazard function is not constant, I'm not sure how to go about calculating an estimate of mean lifetime.
2008 Jul 31
2
Help with hazard plots
Hello. ?I am hoping someone will be willing to help me understand something about hazard plots created with muhaz(...). ?I have some background in statistics (minor in grad school), but I haven't been able to figure one thing about hazard plots. ?I am using hazard plots to track customer cancellations. ?I figure I can treat a cancellation as a "death", and if someone is still a
2007 Jan 23
1
Estimate and plot hazard function using "muhaz" package
Dear R users,
I am trying to use "muhaz" and "plot.muhaz" functions in "muhaz" package to
estimate and plot hazard funciton. However function "muhaz" always gives
error message "Error in Surv(times, delta) : object "times" not found". I
could not even run their sample codes in the user's manual as follows:
data(ovarian)
2003 Nov 05
1
Estimate hazard function from right-censored data only
Dear All,
I would like to ask if it is possible to estimate a hazard function
using the muhaz command when all the data is right-censored. My data
has information of the number of weeks people has been unemployed but
all of them are unemployed at the date of the survey, that is, I cannot
observed when the individuals leave the unemployment state.
I appreciate your help,
Best,
Monica L.
Looking for new maintainer of orphans R2HTML SemiPar cghseg hexbin lgtdl monreg muhaz operators pamr
2014 Aug 08
2
Looking for new maintainer of orphans R2HTML SemiPar cghseg hexbin lgtdl monreg muhaz operators pamr
Dear maintainers and R-devel,
Several orphaned CRAN packages are about to be archived due to
outstanding QC problems, but have CRAN and BioC packages depending on
them which would be broken by the archival (and hence need archiving
alongside).
Therefore we are looking for new maintainers taking over maintainership
for one or more of the following packages:
R2HTML SemiPar cghseg hexbin lgtdl
2010 May 25
2
Relative Risk/Hazard Ratio plots for continuous variables
Dear all,
I am using Windows and R 2.9.2 for my analyses. I have a large dataset and
I am particularly interested in looking at time to an event for a continuous
variable. I would like to produce a plot of log(relative risk) or relative
risk (also known as hazard ratio) against the continuous variable.
I have spent a long time looking for advice on how to do this but my search
has proved
2024 Dec 06
1
ggplot2: Plot multiple lines using stacked data.
I am trying to use ggplot2 to create a figure with multiple lines, one line for each value of the variable Day. Each group of data for Day requires seven lines. The dataframe has data for 4 days and thus 4*7=28 lines.
I can create a plot, but the plot only contains dots. The dots for each day should be connected each day's data by a different line. There should be a total of four lines on the
2009 Jun 29
1
Rattle: Trouble opening .csv files
I am a novice R user and recently installed Rattle primarily for the
decision tree functionality.
I immediately run into problems trying to open a .csv file from the
"Data" tab.
The error message I get in my "R" log window is:
Error in if (crv$load.tooltips) loadTooltips() :
argument is of length zero
Help would be appreciated.
Jim Thompson
2001 Oct 11
2
Where's MVA?
Hi All:
Package TSERIES is stated to depend on MVA. However, there is no MVA package to be found under the list of package sources.
Best wishes,
ANDREW
tseries: Package for time series analysis
Package for time series analysis with emphasis on non-linear and non-stationary modelling Version: 0.7-6
Depends: ts, mva, quadprog
Date: 2001-08-27
Author: Compiled by Adrian
2004 Jul 07
0
GR-303 configuration options?
Can anyone describe the asterisk implementation of this any better than the
sample config files do?
from zapata.conf
; Trunk groups are used for NFAS or GR-303 connections.
;
; Group: Defines a trunk group.
; group => <trunkgroup>,<dchannel>[,<backup1>...]
;
; trunkgroup is the numerical trunk group to create
; dchannel is the zap channel which will
2005 Feb 11
3
Polycom IP 3000 configuration
I am trying to add a Polycom IP 3000 to our Asterisk system and am not
getting anywhere.
h323.conf
[8908]
type=friend
host=192.168.104.25
secret=polycom
context=crv-default
callerid="Conference Room Polycom"
extensions.conf
exten => 8908,1,Dial(h323/polycom,20,Ttr) ; Polycom
exten => 8908,2,Hangup
I have tried setting the Asterisk system as both gatekeeper
2011 Jan 26
0
baseline hazard function
Dear colleagues, I have the following dataset. It is modelled on the data included in Box-Seteffenheiser and Jones "Event History Modelling"
Using the following code, I try to find the baseline hazard function
haz_1<-muhaz(bpa$time, bpa$censored, subset=(bpa$year=="2010" | bpa$ban=="1"), min.time=1, max.time=3)
I think I'm doing everything right, but what I
2004 Dec 23
1
Premature DRQ
I have a problem where an Asterisk server is sending a premature DRQ... Not
sure why..
Here's the setup - Asterisk using inAccess networks H323 replacement channel
driver
Connecting to a Lucent iMerge...
The call connects fine - I get the out of the box greeting - but after
exactly one
Minute - the call terminates.
I have had this problem on multiple different Asterisk configs...
I'm
2007 Feb 28
0
Using ooh323 with Gatekeeper controlled dialling
All,
I've fixed my problem getting Asterisk ooh323 channel to stay registered with my Cisco IOPS gatekeeper, now I need to get dialling working.
I have the following:
[Asterisk with ooh323] ----h323---- [Cisco IOS GK] ----h323---- [Radio system OpenH323]
192.168.1.5 192.168.1.6 192.168.1.7
the Asterisk box has numbers
2007 Oct 29
3
using survfit
hie
when i use plot.survfit to plot more than one graph why I only see the last graph how do i see the other graphs.for example
n=20
n1=n/2
n2=n/4
a11=4;a12=4 ;a21=4 ;a22=4
t1<-array(1,c(n1))
t2<-array(2,c(n1))
treatgrp=matrix(c(t1,t2))
2006 Jun 12
0
non parametric estimates of the hazard with right censored data
Hi,
I want to plot non parametric estimates of the empirical hazard function for
right censored data. I've tried many functions from different packages
(muhaz, Design, survival, eha, event), but none of them gave me what I
wanted. Am I missing something?
Here's what I want. The data below is the same used by Kiefer (J. Economic
Literature, 1988), which in turns use a subset of the data
2011 May 12
3
Survival Rate Estimates
Dear List,
Is there an automated way to use the survival package to generate survival
rate estimates and their standard errors? To be clear, *not *the
survivorship estimates (which are cumulative), but the survival *rate *
estimates...
Thank you in advance for any help.
Best,
Brian
[[alternative HTML version deleted]]
2008 Sep 04
2
Projecting Survival Curve into the Future
Hello,
I have a survivor curve that shows account cancellations during the past 3.5 months. Fortunately for our business, but unfortunately for my analysis, the survivor curve doesn't yet pass through 50%. Is there a safe way to extend the survivor curve and estimate at what time we'll hit 50%?
We started a new program 3.5 months ago, and I believe that this set of accounts behaves
2004 Nov 21
3
TDM400 FXO stops handling outgoing calls, but still accepts incoming?
I have a bit of a weird problem that I'm having great trouble debugging.
I have a TDM400P PCI card with two FXO and two FXS modules. Both FXO modules
are connected to BT lines here in the UK. Both BT lines have V23 Caller-ID,
which works fine with Asterisk. Both asterisk and zaptel are fresh from CVS.
Both FXO modules (channels 3 and 4) are in "group 1" for outgoing calls.
My
2005 Feb 10
0
Asterisk 1.0.5 won't pick up incoming calls
Hi All,
I have just migrated from Asterisk 1.0.0 to Asterisk
1.0.5 and I have an X100P installed. The old asterisk
was working, but now the new version isn't picking up
any calls! However, I did notice that after
installation, I performed modprobe zaptel and modprobe
wcfxo and they worked fine, but when I executed ztcfg,
I get the following errors:
ioctl(ZT_LOADZONE) failed: Invalid