This paper focuses on the problem of maximum likelihood estimation in linear mixed-effects models where outliers or unduly large observations are present in clustered or longitudinal data.

The mixed effects model for binary responses due to Conaway (1990, A Random Effects Model for Binary Data) is extended to accommodate ordinal responses in general and discrete time survival data with ...

Importance/background The 12-lead ECG is recommended in clinical guidelines for prehospital assessment of patients with ...

The Adolescent and Young Adult (AYA) Healthcare Transition (HCT) clinic — a pediatric-to-adult HIV care model — achieved a high 1-year retention rate but a suboptimal viral suppression rate despite ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...