I'm doing the second level analysis in SPM software.
I do the differences between groups. I have three groups (control,
patients with EHM and patients without EHM).
Now I have done a multiple regression with covariates for each group.
The covariates (9 covariates in total) are biochemistry parameters and
oxidate/nitrosative biomarkers.
I have done without problems the multiple regressions for the control
group and for the patients with EHM group.
Hovewer when I do the same with the other group (patients without
EHM)appear the follow error:
SPM12: spm_results_ui (v6200) 19:20:31 - 20/04/2017
=======================================================================
SPM computation : ...height
thresholdError using gammaln
Input must be nonnegative.
Error in spm_ECdensity (line 68)
EC(3,:) = a*exp(gammaln((v+k-2)/2)-b)*(k*t/v).^(1/2*(k-2))...
Error in spm_P_RF (line 63)
EC = spm_ECdensity(STAT,Z,df);
Error in spm_uc_peakFDR (line 83)
[P,p,Eu] = spm_P_RF(1,0,ui,df,STAT,R,n);
Error in wfu_spm_getSPM12 (line 866)
[up,Pp] = spm_uc_peakFDR(0.05,df,STAT,R,n,Zum,XYZum,u);
Error in spm_getSPM (line 7)
[SPM xSPM] = wfu_spm_getSPM12(varargin{:});
Error in spm_results_ui
Error while evaluating UIControl Callback
I attached the SPM generated and the script that I have used in this
case (in matlab format).
The contrast in the other groups are the same, only change the vector
values of the covariates and the scans (they are different for each
group).
Thank for help me in advance!
If anyone need more specific information please write me!
|