Table 1.

Four W questions addressing the past and present and proposing the future of health systems

4 Ws	Past	Present	Future
Where	Hospital-based health system	Community-based health system	Anywhere in a social system
What	Acute care	Long-term care	People-centred care (personalised, affordable, accessible)
When	In the case of acute and communicable diseases	In the case of chronic and non-communicable diseases	At any time
Who	Ambulatory patients (younger population)	Elderly patients (older population)	All people, leaving no one behind, through a life course approach