Introduction to incidence rates and time-changing variables for cohort studies

Koletsi, D; Pandis, Nikolaos (2017). Introduction to incidence rates and time-changing variables for cohort studies. American journal of orthodontics and dentofacial orthopedics, 152(1), pp. 131-132. Elsevier 10.1016/j.ajodo.2017.04.012

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In orthodontics and dentistry in general, we are frequently working on studies where groups of patients are followed over time with the aim to record the occurrence of an event. Subjects may enter a study at various times and be followed until (1) the event of interest occurs, (2) the study is completed (end of follow-up time), or (3) they are lost to follow-up. The analysis of this kind of study is based on incidence rates, or more simply, rates (λ). Rate is the total number of events per person per unit of time (ie, person-time) and reflects the probability that a subject will experience the event of interest at a prespecified time.

Item Type:

Journal Article (Review Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Orthodontics

UniBE Contributor:

Pandis, Nikolaos

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0889-5406

Publisher:

Elsevier

Language:

English

Submitter:

Renate Imhof-Etter

Date Deposited:

18 Apr 2018 14:29

Last Modified:

18 Apr 2018 14:29

Publisher DOI:

10.1016/j.ajodo.2017.04.012

PubMed ID:

28651761

BORIS DOI:

10.7892/boris.114322

URI:

https://boris.unibe.ch/id/eprint/114322

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