How can I change the order display in multtrajplot?

[Hyejin Park]

After running a multi-trajectory group model:
. traj, multgroups(8) var1(days_MC*) indep1(t_1-t_5) order1(3 3 3 3 3 3 3 3) model1(zip) ///
> var2(CPD_MCcat*) indep2(t_1-t_5) order2(3 3 3 3 3 3 3 3) model2(zip) ///
> var3(days_fENDS*) indep3(t_1-t_5) order3(3 3 3 3 3 3 3 3) model3(zip) ///
> var4(P30D_fHK_now*) indep4(t_1-t_5) order4(3 3 3 3 3 3 3 3) model4(zip) ///
> var5(P30D_oFTP*) indep5(t_1-t_5) order5(3 3 3 3 3 3 3 3) model5(logit)

I finalized an 8 group model and tried to plot it:
multtrajplot, xtitle(Wave) ytitle1(days_MC) ytitle2(CPD_MC) ytitle3(days_fENDS) ytitle4(Current status_fHK) ytit
> le5(P30D_fcigar/smkl) ylabel1(0(10)30) ylabel2(0(1)5) ylabel3(0(10)30) ylabel4(0(1)2) ylabel5(0 1)

The display is fine, but I just want to change the order. For example, since Group 3 is the reference. I want to change the order to start with Group 3 (renamed Group 1). How is it possible? Thank you in advance.

.

[ericmelse]

Both traj and multtrajplot are user-community contributed commands (something that you should mention when you post on the Statalist, see also FAQ 3. What should I do before I post? and FAQ 12.1 What to say about your commands and your problem) and can be installed using:

net from https://www.andrew.cmu.edu/user/bjones/traj
net install traj
h traj
h trajplot
h multtrajplot

Furthermore, there are publications about the method with some examples using traj and multtrajplot:

• Elmer, J., Jones, B. L., Zadorozhny, V. I., Puyana, J. C., Flickinger, K. L., Callaway, C. W., & Nagin, D. (2019). A novel methodological framework for multimodality, trajectory model-based prognostication. Resuscitation, 137, 197-204. [behind paywall: https://doi.org/10.1016/j.resuscitation.2019.02.030 ] [free: inpress version]
• Elmer, J., Jones, B. L., & Nagin, D. S. (2018). Using the Beta distribution in group-based trajectory models. BMC medical research methodology, 18(1), 1-5. [ https://doi.org/10.1186/s12874-018-0620-9 ]
• Nagin D. S., Jones B. L., Passos V. L. (2018). Tremblay R. E. Group-based multi-trajectory modeling. Statistical Methods in Medical Research. 27 (7), 2015-2023. [behind paywall: https://doi.org/10.1177/0962280216673085 ] [free: inpress version]
• Jones, B. L., & Nagin, D. S. (2013). A Note on a Stata Plugin for Estimating Group-based Trajectory Models. Sociological Methods & Research. 42 (4), 608–613. [behind paywall: https://doi.org/10.1177/0049124113503141 ] [free: inpress version]
• Haviland, A. M., Jones, B. L., & Nagin, D. S. (2011). Group-based Trajectory Modeling Extended to Account for Nonrandom Participant Attrition. Sociological Methods & Research, 40(2), 367–390. [behind paywall: https://doi.org/10.1177/0049124111400041 ] [free: inpress version]
• Nagin, D. S., & Odgers, C. L. (2010). Group-based trajectory modeling in clinical research. Annual review of clinical psychology, 6, 109-138. [behind paywall: https://doi.org/10.1146/annurev.clinpsy.121208.131413 ] [free: inpress version]
• Jones, B. L., & Nagin, D. S. (2007). Advances in Group-Based Trajectory Modeling and an SAS Procedure for Estimating Them. Sociological Methods & Research, 35(4), 542–571. [behind paywall: https://doi.org/10.1177/0049124106292364 ] [free: inpress version]
• Jones, B. L., Nagin, D. S., & Roeder, K. (2001). A SAS Procedure Based on Mixture Models for Estimating Developmental Trajectories. Sociological Methods & Research, 29(3), 374–393. [behind paywall: https://doi.org/10.1177/0049124101029003005 ] [free: inpress version]

The authors' webpage is here ( Bobby L. Jones & Daniel S. Nagin).

I suggest that you write them your question and, should you be able to change the order, post the solution here as a follow up message with an example that other Stata users can replicate.