Table 3. Marginal analysis options and scenarios.

	’Taking my own leftovers’	’Going to the pharmacy.’	’Visiting a doctor.’	’Visiting a nurse.’
	1	2	3	4
Who advice	Yourself	Non-professional pharmacy worker	Doctor	Nurse
Antibiotics source	Leftovers	Pharmacy	Pharmacy	Pharmacy
Days until getting the appointment	Same day	Same day	3	1
Hours spent to get the advice and antibiotics	Immediately=0	0.5	4	2
Cost (thousand COP)	0	20	40	30
Probability of improving health	Slightly below high=70%	Slight below high=70%	High=90%	High=90%
Risk of adverse outcome	Slightly above low=20%	Slightly above low=20%	Low=10%	Low=10%
Risk of resistance to community	No risk=0%	No risk = 0%	No risk=0%	No risk=0%