Table 1: Characteristics of opioid formulations included in the study.

Drug	Morphine conversion factor	Long-acting opioid formulations		Short-acting opioid formulations
		Formulation	Unit dosage range	Formulation	Unit dosage range
Oxycodone	1.71	Oral	5-80 mg	Oral	2.5-20 mg
Hydromorphone	4.5	Oral	3-32 mg	Oral	1-8 mg
Morphine	1	Oral	10-200 mg	Oral	1-60 mg
Fentanyl	12 µg/h: 52	Transdermal	12-100 µg/h	-	-
	25 µg/h: 97
	37 µg/h: 157
	50 µg/h: 202
	75 µg/h: 292
	100 µg/h: 382
Codeine	0.15	Oral	50-200 mg	Oral	5-60 mg