Using individual patient data from five independent surveys, we evaluate regional variations in survival in cerebral palsy. The influence of four important variables measuring disability, which are only partially observed for many cases, are analysed. Results are compared between a naive...

Aims and Motivation To examine the effect of level of disability on the survival of children with cerebral palsy using a cohort taken from Bristol. The data is subject to, possibly not missing at random (NMAR), unobserved covariate data. Methods A joint survival model for the log-survival times...

In longitudinal and multivariate settings incomplete data, due to missed visits, dropouts or non-return of questionnaires are quite common. A longitudinal trial in which potentially informative missingness occurs is the Collaborative Ankle Support Trial (CAST). The aim of this study is to...