After a lot of effort, I’ve managed to get some statistics from the British Columbia Ministry of Health, and want to share them with researchers, activists and journalists.
Here are the numbers of British Columbians certified (usually meaning they were incarcerated and forcibly treated with drugs or electroshock) under the Mental Health Act in BC from 2002 to 2011, broken down by health regions: BC Forced Treatment Stats. Note that the real numbers are undoubtedly much higher, because certifying someone is a simple procedure of filling out a one-page form, and psychiatrists often need simply threaten to certify someone in order to gain the person’s compliance with confinement and treatment.
And here are the numbers of British Columbians subjected to electro-convulsive therapy (ECT, or electroshock) covering the years 1992-2012: BC ECT rates 1992-2012.
And here are the numbers for ECT in the Vancouver Island Health Authority region, including breakdowns by age and gender: VIHA Summary of ECT Stats by Site.