The table below summarises the results of a comparison of re-admission rates for heart failure in Aboriginal and non-Aboriginal patients after their first ever heart failure hospital admission. Number of patients Person-years follow-up 1,000 Number of re-admissions Re-admission Group Aboriginal Non-Aboriginal rate per 1,000 219 365 219 1.186 3,400 554 163 What is best calculation of the risk of re-admission over a 3-year period for the Aboriginal group? O 0.482 O 0.657 O 0.387 O 0216

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