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Association with loss of motherEdit
Loss of mother during childhood is significantly higher in schizophrenics than for other diagnoses (Freidman et al, 2002).and for those with a first episode of psychosis they were 2.3 times more likely than a control group to have had their mothers die before they were sixteen (Morgan et al 2007). Both these findings were significant after controlling for parental history of mental illness.
==Association with unwanted pregnancy In Finland (Myhrman et al 1996) and the United States (Herman et al 2006), people whose pregnancies had been unwanted are 2.5 and 1.75 times more likely to be diagnosed with schizophrenia.
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- Herman D, Brown A, Opler M, Desai M, Malaspina D, Bresnahan M, et al. (2006) Does unwantedness of pregnancy predict schizophrenia in the offspring? Findings
from a prospective birth cohort study. Soc Psychiatry Psychiatr Epidemiol,4(8):605-610.
- Morgan C, Kirkbride J, Leff J, Craig T, Hutchinson G, McKenzie K, et al. (2007). Parental
separation, loss and psychosis in different ethnic groups: a case-control study. Psychol Med ;37(4):495-503.
- Myhrman A, Rantakallio P, Isohanni M, Jones P, Partanen U. (1996). Unwantedness of a pregnancy and schizophrenia in the child. Br J Psychiatry ;169(5):637-640.