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Missing Data
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I set this group up for the purposes of discussion of issues which arise in the statistical analysis of datasets which suffer from missing data. I will try whenever I can to reply to posts, but may not be able to due to time constraints.
For more information and software for missing data, go to
www.missingdata.org.uk
Jonathan Bartlett
www.missingdata.org.uk
www.thestatsgeek.com
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Kai Hockerts
4/5/23
xtreg - Longitudinal dataset (5 observations) with complete treatment data bit missing observations
I am not sure if this group is still active. We have a data set in which students were surveyed over
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xtreg - Longitudinal dataset (5 observations) with complete treatment data bit missing observations
I am not sure if this group is still active. We have a data set in which students were surveyed over
4/5/23
Neema Mosha
,
Ian McPhail
2
11/24/22
DOUBLY ROBUST APPLICATION USING R
Hello, Appreciating that this was posted over 1.5 year ago, I have a question for the poster. Did you
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DOUBLY ROBUST APPLICATION USING R
Hello, Appreciating that this was posted over 1.5 year ago, I have a question for the poster. Did you
11/24/22
Grace
4/13/21
Clinical trial data
Hello, I want to find a clinical trial database so that I may use multiple imputation on it.
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Clinical trial data
Hello, I want to find a clinical trial database so that I may use multiple imputation on it.
4/13/21
Claire Davies
, …
Jonathan Bartlett
8
11/24/20
Missing data - longitudinal dataset with varying timepoints
Hi Claire Ok. The different timing of visits between child would indeed make my proposal a bit
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Missing data - longitudinal dataset with varying timepoints
Hi Claire Ok. The different timing of visits between child would indeed make my proposal a bit
11/24/20
sammy
, …
Annemarie Schultz
4
10/3/20
Q&A
Is there a way to implement jump to reference (J2R) Multiple Imputation by SAS Pro MI directly?
Hello Everyone, is there a way to implement the j2r approach into SPSS? Or calculate missing values
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Q&A
Is there a way to implement jump to reference (J2R) Multiple Imputation by SAS Pro MI directly?
Hello Everyone, is there a way to implement the j2r approach into SPSS? Or calculate missing values
10/3/20
Alexandra Vegelien
,
Jonathan Bartlett
3
6/19/20
Q&A
Errors when using smcfcs to impute missing covariates in competing risk setting
Dear Jonathan, Thank you for your help! Because of your advice, I was able to get the algorithm
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Q&A
Errors when using smcfcs to impute missing covariates in competing risk setting
Dear Jonathan, Thank you for your help! Because of your advice, I was able to get the algorithm
6/19/20
Dandi
,
Jonathan Bartlett
3
4/1/20
Q&A
5 imputed dataset in Training dataset and test dataset (SAS)
Hi Jonathan, Thank you for your reply. My case is a bit different. I also saw many people separate
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Q&A
5 imputed dataset in Training dataset and test dataset (SAS)
Hi Jonathan, Thank you for your reply. My case is a bit different. I also saw many people separate
4/1/20
aishwarya
10/8/19
Q&A
Missing data (Reaction_time(skewed)) - Between Subjects- repeated measure experiment
Hello, I have a pool of data from 50 subjects recorded over 100 trails. Under one subject, for the
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Q&A
Missing data (Reaction_time(skewed)) - Between Subjects- repeated measure experiment
Hello, I have a pool of data from 50 subjects recorded over 100 trails. Under one subject, for the
10/8/19
Emilia Schwertner
3/6/19
Q&A
Cluster analysis following MI
Hello everyone! I struggle with cluster analysis following multiply imputation. I have problems even
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Q&A
Cluster analysis following MI
Hello everyone! I struggle with cluster analysis following multiply imputation. I have problems even
3/6/19
Hannah Jongsma
2/8/19
Q&A
Weights following multiple imputation
Dear all, I am using a case-control data set (n = roughly 2600) with some missing data. The added
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Q&A
Weights following multiple imputation
Dear all, I am using a case-control data set (n = roughly 2600) with some missing data. The added
2/8/19
lg91...@gmail.com
1/25/19
Q&A
SAS proc mianalyze EDF
We have a cluster randomised trial with a small number of clusters, The primary endpoint is measured
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Q&A
SAS proc mianalyze EDF
We have a cluster randomised trial with a small number of clusters, The primary endpoint is measured
1/25/19
Ronnie Pingel
1/17/19
Q&A
RCT with missing covariate and outcome data.
Hi, I am analysing a stratified RCT with four treatment arms, where 150 patients were allocated to
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Q&A
RCT with missing covariate and outcome data.
Hi, I am analysing a stratified RCT with four treatment arms, where 150 patients were allocated to
1/17/19
Sam R
, …
Vahe Panossian
6
1/2/19
Q&A
Non-parametric analysis with multiple imputations
Hello Katherine and Jonathan, Having the same problem myself. Any solutions found? Best, Vahe On
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Q&A
Non-parametric analysis with multiple imputations
Hello Katherine and Jonathan, Having the same problem myself. Any solutions found? Best, Vahe On
1/2/19
hmthom...@gmail.com
,
phrojas
2
12/7/18
Q&A
Tipping Point Analysis for a Binary Endpoint
In the following: Liublinska, Viktoriia. 2013. Sensitivity Analyses in Empirical Studies Plagued with
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Q&A
Tipping Point Analysis for a Binary Endpoint
In the following: Liublinska, Viktoriia. 2013. Sensitivity Analyses in Empirical Studies Plagued with
12/7/18
melissaja...@gmail.com
8/22/18
Q&A
JAV with MICE & Poisson regression?
Hi Jonathan, I am looking to perform MI using MICE prior to analysing a modified Poisson model with
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Q&A
JAV with MICE & Poisson regression?
Hi Jonathan, I am looking to perform MI using MICE prior to analysing a modified Poisson model with
8/22/18
melissaja...@gmail.com
,
Jonathan Bartlett
6
6/13/18
Q&A
MI in competing risks analysis
I suggest looking at this paper: https://www.ncbi.nlm.nih.gov/pubmed/28573919 If I understand
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Q&A
MI in competing risks analysis
I suggest looking at this paper: https://www.ncbi.nlm.nih.gov/pubmed/28573919 If I understand
6/13/18
regina...@gmail.com
,
Jonathan Bartlett
3
5/11/18
Q&A
Secondary exposures and outcomes
Dear Jonathan, Thank you very much for your prompt response and advice. I had hoped that I could safe
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Q&A
Secondary exposures and outcomes
Dear Jonathan, Thank you very much for your prompt response and advice. I had hoped that I could safe
5/11/18
apje...@gmail.com
,
Jonathan Bartlett
3
4/24/18
Q&A
Imputation for censored data
Thank you! Op dinsdag 24 april 2018 10:17:49 UTC+2 schreef Jonathan Bartlett: Yes. See https://doi.
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Q&A
Imputation for censored data
Thank you! Op dinsdag 24 april 2018 10:17:49 UTC+2 schreef Jonathan Bartlett: Yes. See https://doi.
4/24/18
pauline.r...@ednh.fr
,
Jonathan Bartlett
2
4/10/18
Q&A
SMCFCS Error in R
Hi Pauline It's difficult to know with only the R output unfortunately what the cause of the
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Q&A
SMCFCS Error in R
Hi Pauline It's difficult to know with only the R output unfortunately what the cause of the
4/10/18
Chris McManus
2/1/18
Q&A
More variables than cases: EM, MI or how?
Apologies if this issue has already been raised but a few searches under what seemed like obvious
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Q&A
More variables than cases: EM, MI or how?
Apologies if this issue has already been raised but a few searches under what seemed like obvious
2/1/18
chavi...@gmail.com
12/11/17
Q&A
Bousquet protocol for sensitivity analysis in covariates MI
Hi. I am trying to replicate the sensitivity analysis using by Bousquet 2012 with STATA. But I do not
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Q&A
Bousquet protocol for sensitivity analysis in covariates MI
Hi. I am trying to replicate the sensitivity analysis using by Bousquet 2012 with STATA. But I do not
12/11/17
Jessica Notermans
8/11/17
Q&A
Pooled p-value and F-statistic
Hi everyone, I am currently running linear regression (for moderation and with no moderation), as
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Q&A
Pooled p-value and F-statistic
Hi everyone, I am currently running linear regression (for moderation and with no moderation), as
8/11/17
phayat...@g.ucla.edu
6/8/17
Q&A
Collinearity problem in imputing a repeated measure covariate
Hi Jonathan, I have a question regarding imputing repeated measure covariates using MVN and/or MICE.
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Q&A
Collinearity problem in imputing a repeated measure covariate
Hi Jonathan, I have a question regarding imputing repeated measure covariates using MVN and/or MICE.
6/8/17
Farah Seedat
,
Jonathan Bartlett
3
5/23/17
Q&A
rjlimit warning not disappearing/smc fcs
Dear Jonathan, Thanks very much for your response and confirming it is okay! Best wishes, Farah On
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Q&A
rjlimit warning not disappearing/smc fcs
Dear Jonathan, Thanks very much for your response and confirming it is okay! Best wishes, Farah On
5/23/17
darren....@primoriscs.co.uk
,
Jonathan Bartlett
2
2/8/17
Q&A
Use of auxiliary variables collected post-randomisation in multiple imputation model
Hi Darren 1) is it OK to use auxiliary variables that are collected post-randomisation in a multiple
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Q&A
Use of auxiliary variables collected post-randomisation in multiple imputation model
Hi Darren 1) is it OK to use auxiliary variables that are collected post-randomisation in a multiple
2/8/17
reynae...@gmail.com
,
Jonathan Bartlett
3
2/2/17
Q&A
Multiple imputation (in case of a complete dataset)
Thank you! Op 2 feb. 2017 3:48 pm schreef "'Jonathan Bartlett' via Missing Data"
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Q&A
Multiple imputation (in case of a complete dataset)
Thank you! Op 2 feb. 2017 3:48 pm schreef "'Jonathan Bartlett' via Missing Data"
2/2/17
Win Khaing
12/4/16
Q&A
Data Imputation for correlated longitudinal cohort data
Can anyone help me with advice on imputation of data in logitudinal (correlated) data? In my database
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Q&A
Data Imputation for correlated longitudinal cohort data
Can anyone help me with advice on imputation of data in logitudinal (correlated) data? In my database
12/4/16
Lydia Palumbo
,
Jonathan Bartlett
3
10/18/16
Q&A
EU-SILC
Thank you very much for your answer. I would like to do a cohort period analysis. I thought about
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Q&A
EU-SILC
Thank you very much for your answer. I would like to do a cohort period analysis. I thought about
10/18/16
yongqian...@gmail.com
2
10/12/16
Q&A
using SAS Proc MI to implement reference-based and delta-adjusted imputations
http://arxiv.org/abs/1610.03580 The paper is posted in the above website On Tuesday, October 11, 2016
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Q&A
using SAS Proc MI to implement reference-based and delta-adjusted imputations
http://arxiv.org/abs/1610.03580 The paper is posted in the above website On Tuesday, October 11, 2016
10/12/16
Jamilla Hussain
,
Jonathan Bartlett
4
8/18/16
Q&A
Auxiliary variables that predict missingness
Thank you Jonathan for a quick and informative reply, this is really useful. Kind regards, Jamilla On
unread,
Q&A
Auxiliary variables that predict missingness
Thank you Jonathan for a quick and informative reply, this is really useful. Kind regards, Jamilla On
8/18/16