publication . Book . Article . 2010

Modelling the rate of change in a longitudinal study with missing data, adjusting for contact attempts

Mouna Akacha; Jane L. Hutton;
Open Access English
  • Published: 01 Jan 2010
  • Publisher: University of Warwick. Centre for Research in Statistical Methodology
  • Country: United Kingdom
Abstract
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 mod...
Subjects
free text keywords: QA, R1, Statistics and Probability, Epidemiology, Statistics, Logistic regression, Mixed model, Momentum (technical analysis), Tubular bandage, Ankle, medicine.anatomical_structure, medicine, Missing data, Longitudinal study, Mathematics, Econometrics
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