American Psychiatric Association (1987) Diagnostic and Statistical Manual of Mental Disorders (3rd edn, revised) (DSM–III–R). Washington, DC: APA.
Baron, M., Mendlewicz, J. & Klotz, J. (1981) Age-of-onset and genetic transmission in affective disorders. Acta Psychiatrica Scandinavica, 64, 373–380.
Cadoret, R. J., Woolson, R. & Winokur, G. (1977) The relationship of age of onset in unipolar affective disorder to risk of alcoholism and depression in parents. Journal of Psychiatric Research, 13, 137–142.
Childs, B. & Scriver, C. R. (1986) Age at onset and causes of disease. Perspectives in Biology and Medicine, 29, 437–460.
Cloninger, C. R., Bohman, M. & Sigvardsson, S. (1981) Inheritance of alcohol abuse: cross-fostering analysis of adopted men. Archives of General Psychiatry, 38, 861–868.
Crow, J. F. (1965) Problems of ascertainment in the analysis of family data. In Genetics and the Epidemiology of Chronic Diseases (eds Neel, J. V., Shaw, M. W. & Schull, W. J.), pp. 23–44. Washington, DC: US Department of Health, Education and Welfare.
Hesselbrock, M. N. (1995) Genetic determinants of alcoholic subtypes. In The Genetics of Alcoholism (eds Begleiter, H. & Kissin, B.), pp. 40–69. New York: Oxford University Press.
Heston, L. L., Mastri, A. R., Anderson, V. E., et al (1981) Dementia of the Alzheimer type: Clinical genetics, natural history and associated conditions. Archives of General Psychiatry, 38, 1085–1090.
Kendler, K. S., Gruenberg, A. M. & Tsuang, M. T. (1985) Psychiatric illness in first-degree relatives of schizophrenic and surgical control patients: a family study using DSM–III criteria. Archives of General Psychiatry, 42, 770–779.
Kendler, K. S., Tsuang, M. T. & Hays, P. (1987) Age at onset in schizophrenia: a familial perspective. Archives of General Psychiatry, 44, 881–890.
Kendler, K. S., Lieberman, J. A. & Walsh, D. (1989) The Structured Interview for Schizotypy (SIS): A preliminary report Schizophrenia Bulletin, 15, 559–571.
Kendler, K. S., & Maclean, C. J. (1990) Estimating familial effects on age at onset and liability to schizophrenia. I. Results of a large sample family study. Genetic Epidemiology, 7, 409–417.
Kendler, K. S., McGuire, M., Gruenberg, A. M., et al (1993) The Roscommon Family Study: I. Methods, diagnosis of probands and risk of schizophrenia in relatives. Archives of General Psychiatry, 50, 527–540.
Kendler, K. S., McGuire, M., Gruenberg, A. M., et al (1994) Clinical heterogeneity in schizophrenia and the pattern of psychopathology in relatives: results from an epidemiologically based family study. Acta Psychiatrica Scandinavica, 89, 294–300.
Kendler, K. S., O'Neill, F. A., Burke, J., et al (1996) The Irish study of high-density schizophrenia families: field methods and power to detect linkage. American Journal of Medical Genetics (Neuropsychiatric Genetics), 67, 179–190.
Liang, K.-Y. (1991) Estimating effects of probands' characteristics on familial risk: I. Adjustment for censoring and correlated ages of onset
Genetic Epidemiology, 8, 329–338.
Lindelius, R. (ed.) (1970) A study of schizophrenia. A clinical, prognostic, and family investigation. Acta Psychiatrica Scandinavica (Suppl), 216, 1
Maclean, C. J., Neale, M. C., Meyer, J. M., et al (1990) Estimating familial effects on age at onset and liability to schizophrenia. II. Adjustment for censored data. Genetic Epidemiology, 7, 419–426.
McGue, M., Gottesman, I. I. & Rao, D. C. (1983) The transmission of schizophrenia under a multifactorial threshold model
American Journal of Human Genetics, 35, 1161–1178.
McGue, M., Pickens, R. W. & Svikis, D. S. (1992) Sex and age effects on the inheritance of alcohol problems: A twin study. Journal of Abnormal Psychology, 101, 3–17.
McNeil, T. F. (1988) Obstetric factors and perinatal injuries. In Handbook of Schizophrenia, Volume 3. Nosology, Epidemiology and Genetics of Schizophrenia (eds Tsuang, M. T. & Simpson, J. C.), pp. 319–344. Amsterdam: Elsevier.
Mendlewicz, J. & Baron, M. (1981) Morbidity risks in subtypes of unipolar depressive illness: differences between early and late onset forms. British Journal of Psychiatry, 139, 463–466.
Pulver, A. E., Brown, C. H., Wolyniec, P., et al (1990) Schizophrenia: age at onset, gender and familial risk. Acta Psychiatrica Scandinavica, 82, 344–351.
Pulver, A. E., & Liang, K.-Y. (1991) Estimating effects of proband characteristics on familial risk: II. The association between age at onset and familial risk in the Maryland Schizophrenia Sample. Genetic Epidemiology, 8, 339–350.
Rice, J., Reich, T., Andreasen, N. C., et al (1987) The familial transmission of bipolar illness. Archives of General Psychiatry, 44, 441–447.
Ridley, R. M., Baker, H. F. & Crow, T. J. (1986) Transmissible and non-transmissible neurodegenerative disease: similarities in age of onset and genetics in relation to aetiology. Psychological Medicine, 16, 199–207.
Rissanen, A. M. (1979) Familial occurrence of coronary heart disease. American Journal of Cardiology, 44, 60–66.
SAS Institute (1992) SAS Technical Report P-229 SAS/STAT Software: Changes and Enhancements. Release 6.07. Cary, NC: SAS Institute.
Schulz, B. (1932) Zur Erbpathologie der Schizophrenic (On the hereditary pathology of schizophrenia). Zeitschrift far die gesamte Neurologic und Psychiatrie, 143, 175–293.
Spitzer, R. L., Williams, J. B. & Gibbon, M. (1987) Structured Clinical Interview for DSM–III–R. New York: Biometrics Research Department, New York State Psychiatric Institute.
Walsh, D., O'Hare, A., Blake, B., et al (1980) The treated prevalence of mental illness in the Republic of Ireland – the three county case register study. Psychological Medicine, 10, 465–470.
Weissman, M. M., Merikangas, K. R., Wickramaratne, P., et al (1986) Understanding the clinical heterogeneity of major depression using family data. Archives of General Psychiatry, 43, 430–434.