Over the past three years, there were, on average 174 patients admitted to Griffin annually with a primary diagnosis of CHF. Seventy-three of these patients per annum would have been excluded from participation (e.g., discharged to a skilled nursing facility, too ill to participate), leaving an average of 101 patients per year meeting inclusion criteria. We should, therefore, be able to recruit the 116 subjects need for this study in approximately 14 months.