sdm-help-list
sdm-help-list > t_thr t values and where to find them
Apr 22, 2021 07:04 PM | Molly Rowlands
t_thr t values and where to find them
Hello,
I have two questions re the t_thr column:
1. I'm filling out the sdm table and am struggling filling out the t_thr column. It seems that very few papers (at least the ones that I'm looking at) report the t value they used to threshold their statistical maps. I have noted the various p value the studies used to threshold, and entered these values into the converter on the sdm website (https://www.sdmproject.com/utilities/?sh...). However, the results I get seem odd: e.g. One-sample p to t converter: p = 0.001, n=20, t= .-3.5794
Is this correct? All the examples I see on the website are around 3.1. Is the p value input supposed to be thresholded or unthresholded?
2. Is it worth the hassle of finding the individual t value for each study, or is it better to allow the automatic conservative sdm approach, p=.0001? If this is better, or necessary in some cases where I cannot get the t value, what do I input into the sdm table?
Best wishes,
Molly
I have two questions re the t_thr column:
1. I'm filling out the sdm table and am struggling filling out the t_thr column. It seems that very few papers (at least the ones that I'm looking at) report the t value they used to threshold their statistical maps. I have noted the various p value the studies used to threshold, and entered these values into the converter on the sdm website (https://www.sdmproject.com/utilities/?sh...). However, the results I get seem odd: e.g. One-sample p to t converter: p = 0.001, n=20, t= .-3.5794
Is this correct? All the examples I see on the website are around 3.1. Is the p value input supposed to be thresholded or unthresholded?
2. Is it worth the hassle of finding the individual t value for each study, or is it better to allow the automatic conservative sdm approach, p=.0001? If this is better, or necessary in some cases where I cannot get the t value, what do I input into the sdm table?
Best wishes,
Molly
Threaded View
| Title | Author | Date |
|---|---|---|
| Molly Rowlands | Apr 22, 2021 | |
| Anton Albajes-Eizagirre | Jul 6, 2021 | |
| msolge | Aug 11, 2021 | |
| Lydia Fortea | Aug 12, 2021 | |
| Liangfang Li | Jul 1, 2021 | |
