Evidence
CADDRA's guidelines, Statistics Canada and CIHI data, Health Canada advisories and the studies clinicians rely on, each summarized for a patient and linked to the original so the claim can be checked.
18 clinician-reviewed answers
An analysis of 2012 Canadian data found reported ADHD in 2.9% of adults aged 20 to 64. See how diagnosis, age and sex shape the figures.
10 min readRead answerEvidenceDSM-5-TR uses symptom counts; ICD-11 uses clinical descriptions. Compare ADHD presentations, childhood onset and Canadian practice.
9 min readRead answerEvidenceStatistics Canada data suggest ADHD in Canada is linked with poorer self-rated mental health and higher rates of some diagnosed mental health conditions.
7 min readRead answerEvidenceResearch suggests adults with ADHD may have higher odds of workplace accidents, but the evidence is limited and does not predict risk for one person.
5 min readRead answerEvidenceA key adult ADHD trial found group CBT-style therapy improved attention and executive skills more than supportive group therapy.
8 min readRead answerEvidenceLong-term ADHD studies link medication with some improved outcomes, but benefits vary and observational findings cannot prove cause and effect.
8 min readRead answerEvidenceCADDRA recommends adult ADHD assessment using clinical history, collateral information, rating scales and checks for other explanations.
10 min readRead answerEvidenceCADDRA advises sequencing ADHD care by safety and impairment, treating some conditions together, and referring complex cases for specialist input.
9 min readRead answerEvidenceCADDAC’s 2021 policy paper says adults face delayed or blocked ADHD diagnosis mainly because of stigma, few trained clinicians, cost and uneven access.
7 min readRead answerEvidenceADHD coaching shows promising gains in skills and daily functioning, but adult evidence is limited. Learn what studies and guidelines support.
10 min readRead answerEvidenceCBT can help adult ADHD symptoms, but results vary by comparison group. Explore trials, Cochrane findings and what they mean in Canada.
10 min readRead answerEvidenceVirtual ADHD assessments show promising agreement, but adult diagnostic evidence is limited. Learn what studies show and what needs in-person care.
10 min readRead answerEvidenceADHD is linked with higher crash risk. Review treatment findings, research limits and what Canadian driving-fitness guidance means for you.
10 min readRead answerEvidenceResearch links late ADHD diagnosis in women to missed symptoms and recognition gaps. Hormones may play a role, but important uncertainties remain.
9 min readRead answerEvidenceICD-11 and DSM-5-TR describe ADHD differently in wording, coding and documentation. Here is what changes in practice in Canada.
8 min readRead answerEvidenceIn Canada, brain scans and EEG are not routine ADHD tests. Clinicians assess history, impairment, time course and other explanations.
7 min readRead answerEvidenceEvidence-informed ways to study with ADHD: timed blocks, externalized plans, active recall, body doubling, accommodations and treatment that make the strategies stick.
5 min readRead answerEvidenceHow scientists study the brain effects of ADHD medication: receptor studies, PET and fMRI imaging, EEG, cognitive tasks, trials and registry research.
6 min readRead answerStart your free self-assessment to find out if you’re eligible for fast, affordable, online ADHD care!
