Competing risks in epidemiology: possibilities and pitfalls

Competing risks in epidemiology: possibilities and pitfalls.

BACKGROUND In studies of all-cause mortality, the fundamental epidemiological concepts of rate and risk are connected through a well-defined one-to-one relation. An important consequence of this relation is that regression models such as the proportional hazards model that are defined through the hazard (the rate) immediately dictate how the covariates relate to the survival function (the risk)...

Parametric Estimation in a Recurrent Competing Risks Model

A resource-efficient approach to making inferences about the distributional properties of the failure times in a competing risks setting is presented. Efficiency is gained by observing recurrences of the compet- ing risks over a random monitoring period. The resulting model is called the recurrent competing risks model (RCRM) and is coupled with two repair strategies whenever the system fails. ...

NFC - Possibilities and Risks

Near Field Communication (NFC) is an emerging close range, low bandwidth, induction based communication standard. It is already and will be more broadly integrated tightly with modern smartphones, devices and operating systems. Payment services, setup of high-bandwidth connections, information sharing and identity verification become possible by just touching two NFC devices together. This pape...

Competing risks.

Consider a unit which can experience any one of k competing failure types, and suppose that for each unit we observe the time to failure, T , and the type of failure, C ∈ {1, 2, . . . , k}. The case of observing the pair (T, C) is termed “competing risks” in the statistical literature. After considering some examples we review basic notation and theory of competing risks. In particular we consi...

Conceptual Modelling and Ontology: Possibilities and Pitfalls