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Epidemiology Study of Non-arteritic Anterior Ischemic Optic Neuropathy (NAION)

Ischemic Optic Neuropathy Clinical Trial

Official title:
The Detection and Epidemiology of NAION in a Commercially Insured Population in the United States.

Clinical Trial Summary

The objectives of this study were to: (1) evaluate the natural history of non-arteritic anterior ischemic optic neuropathy (NAION); (2) estimate the population incidence of NAION; and (3) identify potential risk factors for NAION.

Clinical Trial Description

The study population consisted of members of the Ingenix Normative Health Informatics (NHI) Database during 01/01/2003 through 12/31/2007, who were 18 years of age or older with at least 183 days of continuous enrollment in the database and without any doctor visits associated with a diagnosis of ischemic optic neuropathy during the 183 days prior to cohort entry. From the study population, patients with a claim associated with an ischemic optic neuropathy diagnosis code were identified as potential NAION cases (n = 3,732). From the potential NAION cases, definite and possible NAION cases were identified using medical record review and a claims algorithm (n=1,283). From the study population, patients without a claim associated with an ischemic optic neuropathy diagnosis code were randomly selected as controls (n = 20,000) ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01260324
Study type Observational
Source Pfizer
Contact
Status Completed
Phase
Start date August 2008
Completion date March 2010
View Details
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