Inclusion characteristics | Usual residential address within North Coast Area Health Service, and |
 | Aged over 65 at admission, and |
 | One or more diagnoses of: |
 | · Chronic Obstructive Pulmonary Disease (COPD) (ICD10: J41 to J44) |
 | · Diabetes (ICD10: E10 to E15) |
 | · Hypertension (ICD10: I10, I11.9) |
 | · Congestive heart failure (CHF) (ICD10: I50, I11.0, J81) |
 | · Coronary artery disease (ICD10: I20 to I25) |
 | At least one unplanned acute admission in any 12 month period between July 2008 and Dec 2009 with one of the above five diseases as the principal diagnosis and a total of 3 or more unplanned acute hospital admissions in the same 12 month period with one of the five diseases as either the principal diagnosis or an additional diagnosis |
Exclusion characteristics | In receipt of palliative care |
 | In a residential aged care facility |