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Vanasse and colleagues examined the lifetime prevalence of patients with schizophrenia in Quebec from 1996 to 2006 using public health plan databases. Patients were identified with a hospital discharge or physician claim for schizophrenia.[Vanasse et al., 2012]
Goldner et al estimated the 1-year prevalence rates for schizophrenia from 1996 to 1999 using administrative health services data for residents of the Canadian province of British Columbia in the age range of 15 to 65 years. Patients were identified by a diagnostic code of 295 in at least 1 of 3 databases.[Goldner et al., 2003]
Woogh examined the prevalence of schizophrenia over 10 years from 1986 to 1996 in Kingston, Ontario. Patients were identified based on demographic, diagnostic, and service use information for all psychiatric inpatients, outpatients, and emergency contacts at 3 hospitals.[Woogh et al., 2001]
References:
Vanasse A, Courteau J, Fleury MJ, Grégoire JP, Lesage A, Moisan J. Treatment prevalence and incidence of schizophrenia in Quebec using a population health services perspective: different algorithms, different estimates. Soc Psychiatry Psychiatr Epidemiol. 2012; 47 (4): 533-543.
Goldner EM, Jones W, Waraich P. Using administrative data to analyze the prevalence and distribution of schizophrenic disorders. Psychiatr Serv. 2003; 54 (7): 1017-1021.
Woogh C. Is schizophrenia on the decline in Canada? Can J Psychiatry. 2001; 46 (1): 61-67.