1. Blazer, D., George, L.K., Landerman, R.L., Pennybacker, M., Melville, M.L., Woodbury, M., Manton, K.G., Jordan, M., & Locke, B. (1985). Psychiatric disorders: A rural/urban comparison.Archives of General Psychiatry, 42, 651?658.
2. Bloom, B.L. (1975). Changing patterns of psychiatric care, New York: Behavioral Publications, Inc.
3. Bureau of the Census. (1982, November). Data User Service Division, Data Developments V-15, Washington, DC, U.S. Dept. of Commerce.
4. Craig, T.J., & Laska, E.M. (1983). Deinstitutionalization and the survival of the state hospital.Hospital and Community Psychiatry, 34, 616.
5. Diehr, P., Cain, K., Connell, R. & Volinn, E. (1990). What is too much variation? The null hypothesis in small-area analysis.Health Services Research, 24, 742?771.