Document Detail

Under-reporting of infectious gastrointestinal illness in British Columbia, Canada: who is counted in provincial communicable disease statistics?
MedLine Citation:
PMID:  17433132     Owner:  NLM     Status:  MEDLINE    
Under-reporting of infectious gastrointestinal illness (IGI) in British Columbia, Canada was calculated using simulation modelling, accounting for the uncertainty and variability of input parameters. Factors affecting under-reporting were assessed during a cross-sectional randomized telephone survey. For every case of IGI reported to the province, a mean of 347 community cases occurred (5th and 95th percentile estimates ranged from 181 to 611 community cases, respectively). Vomiting [odds ratio (OR) 2.15, 95% confidence interval (CI) 1.03-4.49] and antibiotic use in the previous 28 days (OR 3.59, 95% CI 1.17-10.97) significantly predicted health-care visits in a logistic regression model. In bivariate analyses, physicians were significantly less likely to request stool samples from patients with vomiting (RR 0.09, 95% CI 0.01-0.65) and patients of North American as opposed to non-North American cultural groups (RR 0.38, 95% CI 0.15-0.96). Physicians were more likely to request stool samples from older patients (P=0.003), patients with fewer household members (P=0.002) and those who reported anti-diarrhoeal use following illness (RR 3.33, 95% CI 1.32-8.45). People with symptoms of vomiting were under-represented in provincial communicable disease statistics. Differential degrees of under-reporting must be understood before biased surveillance data can be adjusted.
L MacDougall; S Majowicz; K Doré; J Flint; K Thomas; S Kovacs; P Sockett
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-04-16
Journal Detail:
Title:  Epidemiology and infection     Volume:  136     ISSN:  0950-2688     ISO Abbreviation:  Epidemiol. Infect.     Publication Date:  2008 Feb 
Date Detail:
Created Date:  2008-01-09     Completed Date:  2008-03-13     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  8703737     Medline TA:  Epidemiol Infect     Country:  England    
Other Details:
Languages:  eng     Pagination:  248-56     Citation Subset:  IM    
Epidemiology Services, British Columbia Centre for Disease Control, Vancouver, BC, Canada.
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MeSH Terms
British Columbia / epidemiology
Child, Preschool
Cross-Sectional Studies
Disease Notification / statistics & numerical data*
Gastrointestinal Diseases / epidemiology*
Health Services Research*
Interviews as Topic
Middle Aged
Models, Statistical
Population Surveillance / methods*

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