Estimation de la prévalence et du taux d’incidence du trouble du spectre de l’autisme (TSA). comparaison interprovinciale

Translated title of the contribution: Estimating the prevalence and incidence rate of autism spectrum disorder (ASD): Interprovincial comparisons

Fatoumata Binta Diallo, Helen Maria Vasiliadis, Elizabeth Lin, Donald Langille, Manon Noiseux, Danielle St-Laurent, Eric Fombonne, Éric Pelletier, Louis Rochette, Mark Smith, Angus Thompspon, Alain Vanasse, Steven Kisely, Alain Lesage

Research output: Contribution to journalArticle

Abstract

Objective The prevalence of diagnosed autism spectrum disorders (ASD) has risen steadily over time. There is therefore a need for the monitoring of treated ASD for timely policy making. The objective of this study is to report and compare over a 10-year period the prevalence and incidence rate of diagnosed ASD in four Canadian provinces. Methods This study utilized data from the provinces of Manitoba, Ontario, Quebec and Nova Scotia with access to linked administrative database sources used in the Canadian Chronic Diseases Surveillance Systems to assess the prevalence and incidence rate of a physician diagnosis of ASD. Estimates were produced using health datasets for outpatient and inpatient care (Med-Echo in Quebec, the Canadian Institute of Health Information Discharge Abstract Database in the three other provinces, plus the Ontario Mental Health Reporting System). Dates of service, diagnosis, and physician specialty were extracted. The target population consisted of all residents aged 24 and under eligible for healthcare coverage under provincial law between 1999 and 2012. To be considered as having ASD, an indi-vidual had to have at least one physician claim or hospital discharge abstract indicating one of the following: ICD-9 codes 299.0 to 299.9 or their ICD-10 equivalents, F84.0 to F84.9. The estimates were presented in yearly brackets between 1999-2000 and 2011-2012 by sex and age groups. The main analyses focused on those aged 17 years or less, with the 18 to 24 years group added to show the subsequent progression of the disorder. Results Our findings show that the annual prevalence of ASD rose steadily between 1999 and 2012 in all provinces and for all age groups although this increase varied across Canadian provinces. There were higher annual prevalence estimates in Ontario (4.8 per 1,000) and Nova Scotia (4.2 per 1,000) compared to Quebec (3.0 per 1,000) and Manitoba (2.5 per 1,000), among persons aged 17 years and younger in 2011. As compared to 1999, Quebec and Ontario reported a fivefold and fourfold increase in 2010-2012, the highest among provinces. The prevalence was four times higher in boys than in girls. By age group, the highest prevalence was observed in those aged between 1 to 4 and 5 to 9 years depending on the province. ASD was generally diagnosed before age 10. Incident cases were more frequently diagnosed by pediatricians followed by either psychiatrists or general practitioners depending on the province. Conclusion Our research confirms that ASD has risen steadily in terms of prevalence and incidence rate and that it varies considerably across provinces. It also demonstrates that health administrative databases can be used as registers for ASD. Information derived from these databases could support and monitor development of improved coordination and shared care to meet the continuous and changing needs of patients and families over time. Implication for future research include exploring the etiology of ASD in more recent cohorts as well as investigating the association between variations in health service availability and the prevalence of ASD.

Original languageFrench
Article number1058610ar
Pages (from-to)65-81
Number of pages17
JournalSante Mentale au Quebec
Volume43
Issue number2
DOIs
StatePublished - Sep 1 2018

Fingerprint

Incidence
Quebec
Ontario
International Classification of Diseases
Databases
Nova Scotia
Manitoba
Age Groups
Physicians
Health
Autism Spectrum Disorder
Health Services Accessibility
Health Services Needs and Demand
Policy Making
Ambulatory Care
General Practitioners
Psychiatry
Inpatients
Mental Health
Chronic Disease

Keywords

  • Administrative databases
  • Autism spectrum disorders
  • Incidence rate
  • Prevalence
  • Surveillance

ASJC Scopus subject areas

  • Phychiatric Mental Health
  • Clinical Psychology
  • Psychiatry and Mental health

Cite this

Diallo, F. B., Vasiliadis, H. M., Lin, E., Langille, D., Noiseux, M., St-Laurent, D., ... Lesage, A. (2018). Estimation de la prévalence et du taux d’incidence du trouble du spectre de l’autisme (TSA). comparaison interprovinciale. Sante Mentale au Quebec, 43(2), 65-81. [1058610ar]. https://doi.org/10.7202/1058610ar

Estimation de la prévalence et du taux d’incidence du trouble du spectre de l’autisme (TSA). comparaison interprovinciale. / Diallo, Fatoumata Binta; Vasiliadis, Helen Maria; Lin, Elizabeth; Langille, Donald; Noiseux, Manon; St-Laurent, Danielle; Fombonne, Eric; Pelletier, Éric; Rochette, Louis; Smith, Mark; Thompspon, Angus; Vanasse, Alain; Kisely, Steven; Lesage, Alain.

In: Sante Mentale au Quebec, Vol. 43, No. 2, 1058610ar, 01.09.2018, p. 65-81.

Research output: Contribution to journalArticle

Diallo, FB, Vasiliadis, HM, Lin, E, Langille, D, Noiseux, M, St-Laurent, D, Fombonne, E, Pelletier, É, Rochette, L, Smith, M, Thompspon, A, Vanasse, A, Kisely, S & Lesage, A 2018, 'Estimation de la prévalence et du taux d’incidence du trouble du spectre de l’autisme (TSA). comparaison interprovinciale', Sante Mentale au Quebec, vol. 43, no. 2, 1058610ar, pp. 65-81. https://doi.org/10.7202/1058610ar
Diallo, Fatoumata Binta ; Vasiliadis, Helen Maria ; Lin, Elizabeth ; Langille, Donald ; Noiseux, Manon ; St-Laurent, Danielle ; Fombonne, Eric ; Pelletier, Éric ; Rochette, Louis ; Smith, Mark ; Thompspon, Angus ; Vanasse, Alain ; Kisely, Steven ; Lesage, Alain. / Estimation de la prévalence et du taux d’incidence du trouble du spectre de l’autisme (TSA). comparaison interprovinciale. In: Sante Mentale au Quebec. 2018 ; Vol. 43, No. 2. pp. 65-81.
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abstract = "Objective The prevalence of diagnosed autism spectrum disorders (ASD) has risen steadily over time. There is therefore a need for the monitoring of treated ASD for timely policy making. The objective of this study is to report and compare over a 10-year period the prevalence and incidence rate of diagnosed ASD in four Canadian provinces. Methods This study utilized data from the provinces of Manitoba, Ontario, Quebec and Nova Scotia with access to linked administrative database sources used in the Canadian Chronic Diseases Surveillance Systems to assess the prevalence and incidence rate of a physician diagnosis of ASD. Estimates were produced using health datasets for outpatient and inpatient care (Med-Echo in Quebec, the Canadian Institute of Health Information Discharge Abstract Database in the three other provinces, plus the Ontario Mental Health Reporting System). Dates of service, diagnosis, and physician specialty were extracted. The target population consisted of all residents aged 24 and under eligible for healthcare coverage under provincial law between 1999 and 2012. To be considered as having ASD, an indi-vidual had to have at least one physician claim or hospital discharge abstract indicating one of the following: ICD-9 codes 299.0 to 299.9 or their ICD-10 equivalents, F84.0 to F84.9. The estimates were presented in yearly brackets between 1999-2000 and 2011-2012 by sex and age groups. The main analyses focused on those aged 17 years or less, with the 18 to 24 years group added to show the subsequent progression of the disorder. Results Our findings show that the annual prevalence of ASD rose steadily between 1999 and 2012 in all provinces and for all age groups although this increase varied across Canadian provinces. There were higher annual prevalence estimates in Ontario (4.8 per 1,000) and Nova Scotia (4.2 per 1,000) compared to Quebec (3.0 per 1,000) and Manitoba (2.5 per 1,000), among persons aged 17 years and younger in 2011. As compared to 1999, Quebec and Ontario reported a fivefold and fourfold increase in 2010-2012, the highest among provinces. The prevalence was four times higher in boys than in girls. By age group, the highest prevalence was observed in those aged between 1 to 4 and 5 to 9 years depending on the province. ASD was generally diagnosed before age 10. Incident cases were more frequently diagnosed by pediatricians followed by either psychiatrists or general practitioners depending on the province. Conclusion Our research confirms that ASD has risen steadily in terms of prevalence and incidence rate and that it varies considerably across provinces. It also demonstrates that health administrative databases can be used as registers for ASD. Information derived from these databases could support and monitor development of improved coordination and shared care to meet the continuous and changing needs of patients and families over time. Implication for future research include exploring the etiology of ASD in more recent cohorts as well as investigating the association between variations in health service availability and the prevalence of ASD.",
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T1 - Estimation de la prévalence et du taux d’incidence du trouble du spectre de l’autisme (TSA). comparaison interprovinciale

AU - Diallo, Fatoumata Binta

AU - Vasiliadis, Helen Maria

AU - Lin, Elizabeth

AU - Langille, Donald

AU - Noiseux, Manon

AU - St-Laurent, Danielle

AU - Fombonne, Eric

AU - Pelletier, Éric

AU - Rochette, Louis

AU - Smith, Mark

AU - Thompspon, Angus

AU - Vanasse, Alain

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AU - Lesage, Alain

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N2 - Objective The prevalence of diagnosed autism spectrum disorders (ASD) has risen steadily over time. There is therefore a need for the monitoring of treated ASD for timely policy making. The objective of this study is to report and compare over a 10-year period the prevalence and incidence rate of diagnosed ASD in four Canadian provinces. Methods This study utilized data from the provinces of Manitoba, Ontario, Quebec and Nova Scotia with access to linked administrative database sources used in the Canadian Chronic Diseases Surveillance Systems to assess the prevalence and incidence rate of a physician diagnosis of ASD. Estimates were produced using health datasets for outpatient and inpatient care (Med-Echo in Quebec, the Canadian Institute of Health Information Discharge Abstract Database in the three other provinces, plus the Ontario Mental Health Reporting System). Dates of service, diagnosis, and physician specialty were extracted. The target population consisted of all residents aged 24 and under eligible for healthcare coverage under provincial law between 1999 and 2012. To be considered as having ASD, an indi-vidual had to have at least one physician claim or hospital discharge abstract indicating one of the following: ICD-9 codes 299.0 to 299.9 or their ICD-10 equivalents, F84.0 to F84.9. The estimates were presented in yearly brackets between 1999-2000 and 2011-2012 by sex and age groups. The main analyses focused on those aged 17 years or less, with the 18 to 24 years group added to show the subsequent progression of the disorder. Results Our findings show that the annual prevalence of ASD rose steadily between 1999 and 2012 in all provinces and for all age groups although this increase varied across Canadian provinces. There were higher annual prevalence estimates in Ontario (4.8 per 1,000) and Nova Scotia (4.2 per 1,000) compared to Quebec (3.0 per 1,000) and Manitoba (2.5 per 1,000), among persons aged 17 years and younger in 2011. As compared to 1999, Quebec and Ontario reported a fivefold and fourfold increase in 2010-2012, the highest among provinces. The prevalence was four times higher in boys than in girls. By age group, the highest prevalence was observed in those aged between 1 to 4 and 5 to 9 years depending on the province. ASD was generally diagnosed before age 10. Incident cases were more frequently diagnosed by pediatricians followed by either psychiatrists or general practitioners depending on the province. Conclusion Our research confirms that ASD has risen steadily in terms of prevalence and incidence rate and that it varies considerably across provinces. It also demonstrates that health administrative databases can be used as registers for ASD. Information derived from these databases could support and monitor development of improved coordination and shared care to meet the continuous and changing needs of patients and families over time. Implication for future research include exploring the etiology of ASD in more recent cohorts as well as investigating the association between variations in health service availability and the prevalence of ASD.

AB - Objective The prevalence of diagnosed autism spectrum disorders (ASD) has risen steadily over time. There is therefore a need for the monitoring of treated ASD for timely policy making. The objective of this study is to report and compare over a 10-year period the prevalence and incidence rate of diagnosed ASD in four Canadian provinces. Methods This study utilized data from the provinces of Manitoba, Ontario, Quebec and Nova Scotia with access to linked administrative database sources used in the Canadian Chronic Diseases Surveillance Systems to assess the prevalence and incidence rate of a physician diagnosis of ASD. Estimates were produced using health datasets for outpatient and inpatient care (Med-Echo in Quebec, the Canadian Institute of Health Information Discharge Abstract Database in the three other provinces, plus the Ontario Mental Health Reporting System). Dates of service, diagnosis, and physician specialty were extracted. The target population consisted of all residents aged 24 and under eligible for healthcare coverage under provincial law between 1999 and 2012. To be considered as having ASD, an indi-vidual had to have at least one physician claim or hospital discharge abstract indicating one of the following: ICD-9 codes 299.0 to 299.9 or their ICD-10 equivalents, F84.0 to F84.9. The estimates were presented in yearly brackets between 1999-2000 and 2011-2012 by sex and age groups. The main analyses focused on those aged 17 years or less, with the 18 to 24 years group added to show the subsequent progression of the disorder. Results Our findings show that the annual prevalence of ASD rose steadily between 1999 and 2012 in all provinces and for all age groups although this increase varied across Canadian provinces. There were higher annual prevalence estimates in Ontario (4.8 per 1,000) and Nova Scotia (4.2 per 1,000) compared to Quebec (3.0 per 1,000) and Manitoba (2.5 per 1,000), among persons aged 17 years and younger in 2011. As compared to 1999, Quebec and Ontario reported a fivefold and fourfold increase in 2010-2012, the highest among provinces. The prevalence was four times higher in boys than in girls. By age group, the highest prevalence was observed in those aged between 1 to 4 and 5 to 9 years depending on the province. ASD was generally diagnosed before age 10. Incident cases were more frequently diagnosed by pediatricians followed by either psychiatrists or general practitioners depending on the province. Conclusion Our research confirms that ASD has risen steadily in terms of prevalence and incidence rate and that it varies considerably across provinces. It also demonstrates that health administrative databases can be used as registers for ASD. Information derived from these databases could support and monitor development of improved coordination and shared care to meet the continuous and changing needs of patients and families over time. Implication for future research include exploring the etiology of ASD in more recent cohorts as well as investigating the association between variations in health service availability and the prevalence of ASD.

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KW - Incidence rate

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KW - Surveillance

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