Relatively little is known about the association between ageing and health care costs in middle- and low-income countries - whereas, in high income countries, available data does not yet point to a clear answer - with income elasticity and patient expectations, time to death, the type of service (inpatient or outpatient), and expensive technology, all possibly contributing more to increased spending than ageing populations.
See for example, Asia in the ageing century: Part III - Health care. www.cepar.edu.au/media/113850/asia_in_the_ageing_century_-_part_iii_-_healthcare.pdf
Any relevant and recent (last 5 years) analyses, published or in the grey literature, would be appreciated.