Modelling the rate of change in a longitudinal study with missing data, adjusting for contact attempts
Akacha, Mouna and Hutton, Jane (Statistician). (2011) Modelling the rate of change in a longitudinal study with missing data, adjusting for contact attempts. Statistics in Medicine, Vol.30 (No.10). pp. 1072-1089. ISSN 0277-6715
This is the latest version of this item.
Official URL: http://dx.doi.org/10.1002/sim.4165
The Collaborative Ankle Support Trial (CAST) is a longitudinal trial of treatments for severe ankle sprains in which interest lies in the rate of improvement, the effectiveness of reminders and potentially informative missingness. A model is proposed for continuous longitudinal data with non-ignorable or informative missingness, taking into account the nature of attempts made to contact initial non-responders. The model combines a non-linear mixed model for the outcome model with logistic regression models for the reminder processes. A sensitivity analysis is used to contrast this model with the traditional selection model, where we adjust for missingness by modelling the missingness process.
The conclusions that recovery is slower, and less satisfactory with age and more rapid with below knee cast than with a tubular bandage do not alter materially across all models investigated. The results also suggest that phone calls are most effective in retrieving questionnaires. Copyright (C) 2011 John Wiley & Sons, Ltd.
|Item Type:||Journal Article|
|Subjects:||Q Science > QA Mathematics
R Medicine > R Medicine (General)
|Divisions:||Faculty of Science > Statistics|
|Series Name:||Working papers|
|Journal or Publication Title:||Statistics in Medicine|
|Publisher:||John Wiley & Sons Ltd.|
|Place of Publication:||Coventry|
|Official Date:||10 May 2011|
|Page Range:||pp. 1072-1089|
|Access rights to Published version:||Restricted or Subscription Access|
Available Versions of this Item
Modelling the rate of change in a longitudinal study with missing data, adjusting for contact attempts. (deposited 08 Jun 2011 14:37)
- Modelling the rate of change in a longitudinal study with missing data, adjusting for contact attempts. (deposited 15 Feb 2012 12:10) [Currently Displayed]
Actions (login required)