Journal
JOURNAL OF EPIDEMIOLOGY AND COMMUNITY HEALTH
Volume 58, Issue 8, Pages 718-722Publisher
B M J PUBLISHING GROUP
DOI: 10.1136/jech.2002.006650
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Background: National surveillance for chemical incidents is being developed in the UK. It is important to improve the quality of information collected, standardise techniques, and train personnel. Objective: To define the extent to which eight National Poison Information Service specialists in poison information agree on the classification of calls received as chemical incidents'' based on the national definition. Design: Blinded, inter-rater reliability measured using the kappa statistic for multiple raters. Setting: National Poison Information Service and Chemical Incident Response Service, Guy's and St Thomas's NHS Trust, London. Participants: Eight specialists in poison information who are trained and experienced in handling poisons information calls and have been involved in extracting information for surveillance. Results: The overall level of agreement observed was at least 69% greater than expected by chance (kappa statistic). Fire and incidents where chemicals were released within a property had a very good level of agreement with kappa statistic of 83% and 80% respectively. The lowest level of agreement was observed when no one or only one person was exposed to a chemical (33%) and when the chemical was released into the air (48%). Conclusion: High levels of agreement were observed. There is a need for more training and improvement in consistency of the data collected by all organisations.
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