Is it possible to perform single contrasts with dpabi Viewer when doing ANOVA with Repeated Measures?

Submitted by crmartir on Thu, 10/09/2014 - 09:06

Hi dpabi team,

I have performed statistical analysis with dpabi (ANOVA Repeated Measures) and now I want to view my results. Moreover, I have revised all course video tutorials many times, but I have not find the way to perform single contrasts (like in SPM) when doing an ANOVA. I know how to display the resuts when performing t tests (for example, I have used dpabi Viewer to see the results from a pair t test) but I do not know how to select single contrasts when one has three conditions in the analysis.

Thanks in advance. Any suggestion will be very appreciated.

Sincerely,

Cristian.

Forums:

sandywang

Fri, 10/10/2014 - 02:10

Hi Cristian,
I am sorry I are not sure what is "single contrasts",
Do you mean you need perform One-way ANOVA with SPM?
I think SPM can output a F maps after ANOVA.
Or you can use DPABI's statistical toolbox to do it,
then you need select F maps what you get.

Hope this helpful:)

YAN Chao-Gan

Fri, 10/10/2014 - 20:11

You can have a look on y_GroupAnalysis_Image.m and define your own contrast there.

Best,

Chao-Gan

crmartir

Thu, 11/20/2014 - 13:28

Hi,

I cannot find this function on the Statistical Analysis GUI. I have seen the file on the programm folders, concretely, on the Statistical Analysis folder. However, there is no any function to define contrasts between groups - because I have three groups. 

Thanks in advance, any suggestion would be appreciated.

All the best,

Cristian.

crmartir

Fri, 11/21/2014 - 12:19

Hi,

I cannot find this function on the Statistical Analysis GUI. I have seen the file on the programm folders, concretely, on the Statistical Analysis folder. However, there is no any function to define contrasts between groups - because I have three groups. 

Thanks in advance, any suggestion would be appreciated.

All the best,

Cristian.

YAN Chao-Gan

Mon, 11/24/2014 - 19:38

Hi,

To use that function, you have to familliar with programming, define the contrast in the command line. There is no GUI for defining contrasts in DPABI, although you can use paired t-test GUI to do paried t-test as post-hoc analysis after one-way ANOVA.

Best,

Chao-Gan

crmartir

Tue, 11/25/2014 - 12:36

Hi,

Thanks for the valuable help. I wll try to do the post hoc analysis as paired t test.

All the best,

Cristian.