Following this trial, how confident do you feel with opioids conversions? (1–5 scale)	Very (5)	4	3	2	Not at all (1)
If eGFR is reduced (<30) does this usually alter your choice of opioid?	Yes	No
What resources do you use when making drug conversions?	Choice:	Own Knowledge	Scottish Palliative Care Guidelines	Colleague	Senior Colleague	Other source, please specify
Do you always double-check your conversions?	Yes	No
If yes, how?	Choice	Colleague	Consultant	Senior Colleague	Pharmacist	Other
If not, why not?	Choice	Confident with prescribing	No time	Availability of colleague
If you could easily double-check your calculations, would you?	Yes	No
Have you ever had a situation where you had to amend a calculation?	Yes	No
Could SPOT resolve this situation?	Yes	No
Have you ever had a situation where you were unable to perform a calculation?	Yes	No
Could SPOT resolve this situation?	Yes	No
Are you familiar with the opioid conversion calculator, SPOT?	Yes	No
Have you used the opioid conversion calculator, SPOT?	Yes	No
If you did not use the tool, what was the reason?	Choice