Evaluation of surveillance methods for an epidemiological study of contact lens related microbial keratitis

Keay, Lisa, Edwards, Katie P., Brian, Garry, Naduvilath, Thomas, & Stapleton, Fiona (2004) Evaluation of surveillance methods for an epidemiological study of contact lens related microbial keratitis. Clinical & Experimental Ophthalmology, 32(4), pp. 349-353.

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PURPOSE: To evaluate surveillance methods in a pilot epidemiological study of contact lens related microbial keratitis (MK) cases identified by ophthalmic practitioners in Australia and New Zealand between May and August 2003 inclusive.----- METHODS: Twelve ophthalmologists and 55 optometrists from rural and metropolitan locations were sent a study information pack with postal reporting forms. After 2 months, practitioners were emailed a link to a website for Internet reporting. After 4 months, practitioners were prompted by email and then by telephone if a response was not received. Passive response rates were the rate of returns after posting information and emailing the website link. Active response rates included personalized email and telephone follow-up.----- RESULTS: Ten cases of MK were identified by optometrists and five by ophthalmologists. The passive response rates were 79% and 58% for the first and second reporting periods, respectively. There was a lower response rate in the second reporting period compared to the first (P = 0.02). With active surveillance the response rate increased to 97% and 96%. A large proportion of optometrists (62%) and ophthalmologists (55%) used the website for at least one reporting period. Internet reporting was used by all New Zealand practitioners (5/5).----- CONCLUSIONS: A surveillance study to estimate the incidence of contact lens related MK in Australia and New Zealand is feasible and acceptable. Internet-based reporting offers a reliable, rapid and cost-effective means of running a large scale, international surveillance study. Active surveillance methods are necessary to enhance reporting rates.

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11 citations in Scopus
10 citations in Web of Science®
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ID Code: 20555
Item Type: Journal Article
Refereed: Yes
Additional Information: Accession Number: 15281965 Language: English. Date Revised: 20061115. Date Created: 20040729. Date Completed: 20041018. Update Code: 20081217. Publication Type: Journal Article; Research Support, Non-U.S. Gov't. Journal ID: 100896531. Publication Model: Print. Cited Medium: Print. NLM ISO Abbr: Clin. Experiment. Ophthalmol.
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Keywords: contact lenses adverse effects, corneal ulcer epidemiology, eye infections, bacterial epidemiology, population surveillance methods, adolescent, adult, australia epidemiology, contact lenses statistics & numerical data, corneal ulcer microbiology, epidemiologic methods, eye infections, bacterial etiology, humans, incidence, internet, middle aged, New Zealand epidemiology, ophthalmology statistics & numerical data, optometry statistics & numerical data, pilot projects, rural health statistics & numerical data, urban health statistics & numerical data
DOI: 10.1111/j.1442-9071.2004.00835.x
ISSN: 1442-6404
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > Institutes > Institute of Health and Biomedical Innovation
Deposited On: 20 May 2009 22:07
Last Modified: 10 Aug 2011 17:36

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