You are on the new improved site. You can view the old site in view-only mode here until June 27, 2026

Filter Results

Select search scope: search across all journals or within the current journal

Search this journal

Enter search terms…

Advanced search

/

About

About Sage
About Sage Journals
Privacy Policy
Terms of Use
Contact Us
Help

Information for

Authors
Editors
Librarians
Researchers
Reviewers
Frequently asked questions

All content on this site: Copyright © 2026 Sage Publications. All rights reserved. This website is technically supported and operated by China National Publications Import and Export (Group) Co., Ltd. 京ICP备09090397号-11

Letter to the Editor

Statistical Methods in Medical Research

Impact Factor: 1.9 / 5-Year Impact Factor: 2.5

Journal Homepage Submission guidelines

Restricted access

Letter

First published online March, 2018

Letter to the Editor

, , and

Volume 27, Issue 3

https://doi.org/10.1177/0962280216648050

Abstract

Get full access to this article

View all access options for this article.

References

1.

Davies CE, Glonek GFV and Giles LC. The impact of covariance misspecification in group-based trajectory models for longitudinal data with non-stationary covariance structure. Stat Methods Med Res. Epub ahead of print 17 August 2015. DOI: 10.1177/0962280215598806.

2.

Muthén

L

Muthén

B

. Mplus user’s guide, 6th ed. Los Angeles, CA: Muthén & Muthén, 1998–2010.

Browse journal

Current issue OnlineFirst All issues

Similar articles

Retricted access

Group sequential design using restricted mean survival time as the primary endpoint in clinical trials

Open access

Dialogic Memory-Work as a Method to Explore the “Afterlife” of our Self-Study Doctoral Research

Retricted access

To what extent is response-adaptive randomization used in clinical trials? A systematic review using Cortellis Regulatory Intelligence database

Open access

Critical Complete-Member Ethnography Revisited: A Heuristic Reflection of Nativeness,Insiderness,and Homeland During the COVID-19 Pandemic