- Dementia: the leading predictor of death in a defined elderly population: the Cache County Study. Tschanz, J.T., Corcoran, C., Skoog, I., Khachaturian, A.S., Herrick, J., Hayden, K.M., Welsh-Bohmer, K.A., Calvert, T., Norton, M.C., Zandi, P., Breitner, J.C. Neurology (2004)