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Re: Error in Multiple Imputation PASW 17?
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Hi Henrik,
I can't find evidence of our knowing about this in Support. I'll be glad to follow up on it.
David Nichols
-----Original Message-----
From: SPSSX(r) Discussion [mailto:SPSSX-L@...] On Behalf Of Henrik Lolle
Sent: Wednesday, July 01, 2009 6:49 AM
To: SPSSX-L@...
Subject: Re: [SPSSX-L] Error in Multiple Imputation PASW 17?
I discovered the same kind of results with Multiple imputation in ordinary GLM. I have reported it to SPSS but haven't received any explanation yet.
Best,
Henrik
Quoting "Ginkel, Joost van" <JGinkel@...>:
> I have tried the Multiple imputation procedure in PASW 17 for
> analyzing a data set with missing values. The procedure is quite user-friendly.
> However, when using the procedure I discovered some strange things
> about the pooled results in the output. The pooled significance tests
> from a regression model sometimes have p-values that are exactly equal
> to 1. I find it hard to believe that these results are correct since
> the p-values of the 5 imputed datasets vary around 0.20. I can imagine
> that SE's increase due to the extra uncertainty because of the missing
> data, but I can't imagine that this p-value increases exactly to one.
> Thus far, I have only seen this occur within the procedure Mixed
> models so I don't know if it occurs in other procedures as well. For
> people who want to see what I mean, I can send the data and the syntax
> file that generated these results, on request.
>
> Best regards,
>
> Joost van Ginkel
>
> **********************************************************************
> This email and any files transmitted with it are confidential and
> intended solely for the use of the individual or entity to whom they
> are addressed. If you have received this email in error please notify
> the system manager.
> **********************************************************************
>
>
************************************************************
Henrik Lolle
Department of Economics, Politics and Public Administration Aalborg University Fibigerstraede 1 9200 Aalborg
Phone: (+45) 99 40 81 84
************************************************************
=====================
To manage your subscription to SPSSX-L, send a message to LISTSERV@... (not to SPSSX-L), with no body text except the command. To leave the list, send the command SIGNOFF SPSSX-L For a list of commands to manage subscriptions, send the command INFO REFCARD
=====================
To manage your subscription to SPSSX-L, send a message to
LISTSERV@... (not to SPSSX-L), with no body text except the
command. To leave the list, send the command
SIGNOFF SPSSX-L
For a list of commands to manage subscriptions, send the command
INFO REFCARD
I can't find evidence of our knowing about this in Support. I'll be glad to follow up on it.
David Nichols
-----Original Message-----
From: SPSSX(r) Discussion [mailto:SPSSX-L@...] On Behalf Of Henrik Lolle
Sent: Wednesday, July 01, 2009 6:49 AM
To: SPSSX-L@...
Subject: Re: [SPSSX-L] Error in Multiple Imputation PASW 17?
I discovered the same kind of results with Multiple imputation in ordinary GLM. I have reported it to SPSS but haven't received any explanation yet.
Best,
Henrik
Quoting "Ginkel, Joost van" <JGinkel@...>:
> I have tried the Multiple imputation procedure in PASW 17 for
> analyzing a data set with missing values. The procedure is quite user-friendly.
> However, when using the procedure I discovered some strange things
> about the pooled results in the output. The pooled significance tests
> from a regression model sometimes have p-values that are exactly equal
> to 1. I find it hard to believe that these results are correct since
> the p-values of the 5 imputed datasets vary around 0.20. I can imagine
> that SE's increase due to the extra uncertainty because of the missing
> data, but I can't imagine that this p-value increases exactly to one.
> Thus far, I have only seen this occur within the procedure Mixed
> models so I don't know if it occurs in other procedures as well. For
> people who want to see what I mean, I can send the data and the syntax
> file that generated these results, on request.
>
> Best regards,
>
> Joost van Ginkel
>
> **********************************************************************
> This email and any files transmitted with it are confidential and
> intended solely for the use of the individual or entity to whom they
> are addressed. If you have received this email in error please notify
> the system manager.
> **********************************************************************
>
>
************************************************************
Henrik Lolle
Department of Economics, Politics and Public Administration Aalborg University Fibigerstraede 1 9200 Aalborg
Phone: (+45) 99 40 81 84
************************************************************
=====================
To manage your subscription to SPSSX-L, send a message to LISTSERV@... (not to SPSSX-L), with no body text except the command. To leave the list, send the command SIGNOFF SPSSX-L For a list of commands to manage subscriptions, send the command INFO REFCARD
=====================
To manage your subscription to SPSSX-L, send a message to
LISTSERV@... (not to SPSSX-L), with no body text except the
command. To leave the list, send the command
SIGNOFF SPSSX-L
For a list of commands to manage subscriptions, send the command
INFO REFCARD
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