Timeline for Test for interaction effect when contrasting specific timepoints in mixed-model
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 31, 2022 at 13:39 | vote | accept | Dilara | ||
| May 18, 2022 at 17:32 | answer | added | EdM | timeline score: 2 | |
| May 18, 2022 at 16:08 | answer | added | Russ Lenth | timeline score: 4 | |
| May 17, 2022 at 15:15 | comment | added | Russ Lenth |
Look at joint_tests
|
|
| May 17, 2022 at 14:20 | comment | added | Dilara | @RussLenth Thanks for your suggestion. I added the ''at'' term to the emmeans call, but I still only get the simple contrasts (e.g. comparison of group 1 at time point 3 vs 5, or comparison of all groups with each other at one timepoint e.g. group 1-2, group 1-3 etc. at one time point). I'm looking for an overall test testing whether there are any differences between groups across timepoint 3 vs 5. | |
| May 17, 2022 at 13:54 | comment | added | Russ Lenth |
What if you add , at = list(time = c(3,5)) to the emmeans call?
|
|
| May 17, 2022 at 12:47 | history | edited | Dilara | CC BY-SA 4.0 |
added 2 characters in body
|
| May 17, 2022 at 12:47 | history | edited | Dilara | CC BY-SA 4.0 |
added 149 characters in body
|
| May 17, 2022 at 11:59 | comment | added | EdM |
With the time:group interaction there isn't a unique "overall" measure of the difference between time points 3 and 5, as the outcome values at both time points depend on which group is involved. Do you want an average over the individuals in your study, or an average over the 6 groups (weighting them equally regardless of group size), or a test whether any of the groups differs between those time points? Please edit your question to provide that information, as comments are easy to overlook and can be deleted.
|
|
| May 17, 2022 at 11:54 | history | edited | EdM |
edited tags
|
|
| May 17, 2022 at 8:14 | history | edited | Dilara | CC BY-SA 4.0 |
added 17 characters in body
|
| May 17, 2022 at 8:11 | history | edited | Dilara | CC BY-SA 4.0 |
added 23 characters in body
|
| S May 17, 2022 at 8:10 | review | First questions | |||
| May 17, 2022 at 9:01 | |||||
| S May 17, 2022 at 8:10 | history | asked | Dilara | CC BY-SA 4.0 |