Timeline for which LME model to use?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 5, 2023 at 2:53 | comment | added | David B | I would advise against making analytic decisions based on how you plan to visualize the results. You can still plot each person's trajectory over time without doing a spaghetti plot. | |
| Feb 5, 2023 at 2:44 | comment | added | 1234adhwa | I was thinking because I wanted to have sphagetti plots,few other plots,and table with distribution of outcome stratifed by treatment and time points ;it would make sense to round it to two or one demical places. As far as regression model I agree that more precision would be better to caputare the variance | |
| Feb 5, 2023 at 2:35 | comment | added | David B | Is there any cost for being more precise? What's the down side? | |
| Feb 5, 2023 at 2:18 | comment | added | 1234adhwa | Thanks.do you think rounding the outcome and baseline age to one or two decimals would make any diffrence given my research question. Is there a rule of thumb to when to round outcome and covariate | |
| Feb 5, 2023 at 0:32 | comment | added | David B | This might be a little controversial, but my answer would be yes, and you should also include age x visit as well. See davidbaranger.com/2020/05/26/… | |
| Feb 5, 2023 at 0:12 | comment | added | 1234adhwa | hi ,just to be clear I have two variables one is visit and other is age at baseline.By including interaction do you mean to include visit x treatment or age x treatment? I have to include visit*treatment to answer my research question if the new diet affect one’s weight over time differently for those on the new diet versus those not receiving the new diet. However I do not know if include age as a covariate , do i include age x treatment in the model or it is not necessary | |
| Feb 5, 2023 at 0:08 | history | answered | David B | CC BY-SA 4.0 |