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Is antipsychotic polypharmacy a risk factor for death from natural causes in patients with schizophrenia?
Case–control study nested in cohort of 27 633 patients aged 18–53 years, with ICD-8 and ICD-10 diagnosed schizophrenia or other psychoses (mainly non-affective). 193 ‘cases’ were selected from those who died from natural causes between 1 January 2004 and 31 December 2005. Deaths due to suicide, homicide or accident and unexplained deaths were excluded. Up to 15 age- and sex-matched controls were identified per case and had to be alive at the date of death of respective case. Their index date was defined as the date of death of their matched case. Both cases and controls were included if they had filled at least one prescription for an antipsychotic and had been hospitalised for less than 240 days during the year prior to the date of death or the index date.
Denmark; January 1996 to December 2005.
Antipsychotic use; monotherapy was defined as one prescription filled for a single antipsychotic within 90 days prior to death or the index …
Source of funding National Board of Health in Denmark and the Wørzner foundation.
Competing interests AK is principal investigator of over 330 clinical trials sponsored by over 55 pharmaceutical companies and 30 clinical research organisations.