A spatial and temporal analysis of notifiable gastrointestinal illness in the Northwest Territories, Canada, 1991-2008
<p>Abstract</p> <p>Background</p> <p>This is the first study to describe the geographical and temporal distribution of notifiable gastrointestinal illness (NGI) in the Northwest Territories (NWT), Canada. Understanding the distribution of NGI in space and time is import...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2012-05-01
|
| Series: | International Journal of Health Geographics |
| Subjects: | |
| Online Access: | http://www.ij-healthgeographics.com/content/11/1/17 |
| _version_ | 1811287258800586752 |
|---|---|
| author | Pardhan-Ali Aliya Berke Olaf Wilson Jeff Edge Victoria L Furgal Chris Reid-Smith Richard Santos Maria McEwen Scott A |
| author_facet | Pardhan-Ali Aliya Berke Olaf Wilson Jeff Edge Victoria L Furgal Chris Reid-Smith Richard Santos Maria McEwen Scott A |
| author_sort | Pardhan-Ali Aliya |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>This is the first study to describe the geographical and temporal distribution of notifiable gastrointestinal illness (NGI) in the Northwest Territories (NWT), Canada. Understanding the distribution of NGI in space and time is important for identifying communities at high risk. Using data derived from the Northwest Territories Communicable Disease Registry (NWT CDR), a number of spatial and temporal techniques were used to explore and analyze NGI incidence from the years 1991 to 2008. Relative risk mapping was used to investigate the variation of disease risk. Scan test statistics were applied to conduct cluster identification in space, time and space-time. Seasonal decomposition of the time series was used to assess seasonal variation and trends in the data.</p> <p>Results</p> <p>There was geographic variability in the rates of NGI with higher notifications in the south compared to the north. Incidence of NGI exhibited seasonality with peaks in the fall months for most years. Two possible outbreaks were detected in the fall of 1995 and 2001, of which one coincided with a previously recognized outbreak. Overall, incidence of NGI fluctuated from 1991 to 2001 followed by a tendency for rates to decrease from 2002 to 2008.</p> <p>Conclusions</p> <p>The distribution of NGI notifications varied widely according to geographic region, season and year. While the analyses highlighted a possible bias in the surveillance data, this information is beneficial for generating hypotheses about risk factors for infection.</p> |
| first_indexed | 2024-04-13T03:15:31Z |
| format | Article |
| id | doaj.art-a9525b7bda2e439fa04de3c37f22f24a |
| institution | Directory Open Access Journal |
| issn | 1476-072X |
| language | English |
| last_indexed | 2024-04-13T03:15:31Z |
| publishDate | 2012-05-01 |
| publisher | BMC |
| record_format | Article |
| series | International Journal of Health Geographics |
| spelling | doaj.art-a9525b7bda2e439fa04de3c37f22f24a2022-12-22T03:04:56ZengBMCInternational Journal of Health Geographics1476-072X2012-05-011111710.1186/1476-072X-11-17A spatial and temporal analysis of notifiable gastrointestinal illness in the Northwest Territories, Canada, 1991-2008Pardhan-Ali AliyaBerke OlafWilson JeffEdge Victoria LFurgal ChrisReid-Smith RichardSantos MariaMcEwen Scott A<p>Abstract</p> <p>Background</p> <p>This is the first study to describe the geographical and temporal distribution of notifiable gastrointestinal illness (NGI) in the Northwest Territories (NWT), Canada. Understanding the distribution of NGI in space and time is important for identifying communities at high risk. Using data derived from the Northwest Territories Communicable Disease Registry (NWT CDR), a number of spatial and temporal techniques were used to explore and analyze NGI incidence from the years 1991 to 2008. Relative risk mapping was used to investigate the variation of disease risk. Scan test statistics were applied to conduct cluster identification in space, time and space-time. Seasonal decomposition of the time series was used to assess seasonal variation and trends in the data.</p> <p>Results</p> <p>There was geographic variability in the rates of NGI with higher notifications in the south compared to the north. Incidence of NGI exhibited seasonality with peaks in the fall months for most years. Two possible outbreaks were detected in the fall of 1995 and 2001, of which one coincided with a previously recognized outbreak. Overall, incidence of NGI fluctuated from 1991 to 2001 followed by a tendency for rates to decrease from 2002 to 2008.</p> <p>Conclusions</p> <p>The distribution of NGI notifications varied widely according to geographic region, season and year. While the analyses highlighted a possible bias in the surveillance data, this information is beneficial for generating hypotheses about risk factors for infection.</p>http://www.ij-healthgeographics.com/content/11/1/17Gastrointestinal illnessFoodborne diseasesWaterborne diseasesMinority healthPopulation surveillanceSpatial epidemiologyTemporal epidemiologySpatio-temporal epidemiology |
| spellingShingle | Pardhan-Ali Aliya Berke Olaf Wilson Jeff Edge Victoria L Furgal Chris Reid-Smith Richard Santos Maria McEwen Scott A A spatial and temporal analysis of notifiable gastrointestinal illness in the Northwest Territories, Canada, 1991-2008 International Journal of Health Geographics Gastrointestinal illness Foodborne diseases Waterborne diseases Minority health Population surveillance Spatial epidemiology Temporal epidemiology Spatio-temporal epidemiology |
| title | A spatial and temporal analysis of notifiable gastrointestinal illness in the Northwest Territories, Canada, 1991-2008 |
| title_full | A spatial and temporal analysis of notifiable gastrointestinal illness in the Northwest Territories, Canada, 1991-2008 |
| title_fullStr | A spatial and temporal analysis of notifiable gastrointestinal illness in the Northwest Territories, Canada, 1991-2008 |
| title_full_unstemmed | A spatial and temporal analysis of notifiable gastrointestinal illness in the Northwest Territories, Canada, 1991-2008 |
| title_short | A spatial and temporal analysis of notifiable gastrointestinal illness in the Northwest Territories, Canada, 1991-2008 |
| title_sort | spatial and temporal analysis of notifiable gastrointestinal illness in the northwest territories canada 1991 2008 |
| topic | Gastrointestinal illness Foodborne diseases Waterborne diseases Minority health Population surveillance Spatial epidemiology Temporal epidemiology Spatio-temporal epidemiology |
| url | http://www.ij-healthgeographics.com/content/11/1/17 |
| work_keys_str_mv | AT pardhanalialiya aspatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT berkeolaf aspatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT wilsonjeff aspatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT edgevictorial aspatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT furgalchris aspatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT reidsmithrichard aspatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT santosmaria aspatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT mcewenscotta aspatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT pardhanalialiya spatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT berkeolaf spatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT wilsonjeff spatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT edgevictorial spatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT furgalchris spatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT reidsmithrichard spatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT santosmaria spatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 AT mcewenscotta spatialandtemporalanalysisofnotifiablegastrointestinalillnessinthenorthwestterritoriescanada19912008 |