1 University of Sherbrooke, Faculty of Medicine and Health Sciences, Research Center-Hôpital Charles LeMoyne, Longueuil, Québec.
2 Bureau d'information et d'études en santé des populations, Institut national de santé publique du Québec, Québec City, Québec.
Can J Psychiatry. 2017 Dec;62(12):818-826. doi: 10.1177/0706743717714468. Epub 2017 Jun 15.
There is a need for the routine monitoring of treated attention-deficit hyperactivity disorder (ADHD) for timely policy making. The objective is to report and assess over a decade the prevalence and incidence of diagnosed ADHD in Canada.
Administrative linked patient data from the provinces of Manitoba, Ontario, Quebec, and Nova Scotia were obtained from the same sources as the Canadian Chronic Diseases Surveillance Systems to assess the prevalence and incidence of a primary physician diagnosis of ADHD ( ICD-9 and ICD-10 codes: 314, F90.x) for consultations in outpatient and inpatient settings (Med-Echo in Quebec, the Canadian Institute of Health Information Discharge Abstract Database in the 3 other provinces, plus the Ontario Mental Health Reporting System). Dates of service, diagnosis, and physician specialty were retained. The estimates were presented in yearly brackets between 1999-2000 and 2011-2012 by age and sex groups.
The prevalence of ADHD between 1999 and 2012 increased in all provinces and for all groups. The prevalence was approximately 3 times higher in boys than in girls, and the highest prevalence was observed in the 10- to 14-year age group. The incidence increased between 1999 and 2012 in Manitoba, Quebec, and Nova Scotia but remained stable in Ontario. Incident cases were more frequently diagnosed by general practitioners followed by either psychiatrists or paediatricians depending on the province.
The prevalence and incidence of diagnosed ADHD did not increase similarly across all provinces in Canada between 1999 and 2012. Over half of cases were diagnosed by a general practitioner.
需要对治疗的注意力缺陷多动障碍（ADHD）进行常规监测，以便及时制定政策。本研究旨在报告和评估在加拿大超过十年的时间里，被诊断为 ADHD 的患病率和发病率。
从马尼托巴省、安大略省、魁北克省和新斯科舍省获得与加拿大慢性病监测系统相同来源的行政链接患者数据，以评估初级医生诊断为 ADHD 的患病率和发病率（ICD-9 和 ICD-10 代码：314、F90.x），用于门诊和住院环境中的就诊（魁北克的 Med-Echo、其他 3 个省的加拿大卫生信息研究所出院摘要数据库，以及安大略省心理健康报告系统）。保留了就诊日期、诊断和医生专业信息。按照年龄和性别组，在 1999-2000 年至 2011-2012 年的每年区间内报告估计值。
1999 年至 2012 年期间，所有省份和所有年龄段的 ADHD 患病率均有所增加。男孩的患病率约为女孩的 3 倍，10 至 14 岁年龄组的患病率最高。1999 年至 2012 年期间，马尼托巴省、魁北克省和新斯科舍省的发病率有所增加，但安大略省的发病率保持稳定。根据省份的不同，发病病例更多地由全科医生诊断，其次是精神科医生或儿科医生。
1999 年至 2012 年期间，加拿大所有省份的被诊断为 ADHD 的患病率和发病率并未同步增加。超过一半的病例由全科医生诊断。
