Table 1.

Summary of attributable risk and review levels for each PHO risk screening tool score

Score	Description of risk Level	Review level
0	No risks identified	Archive
		RST catalogued by ethics office, projects receive periodic audit.
1	Activity appears to be very low risk. Alternatives to ethics board review may be appropriate.	Level 1 Delegated Review
		Delegated review by single reviewer; no completion of separate application form.
2	Activity appears to be minimal risk	Delegated ethics review
		Completion of full ethics review board application form required.
		Review completed by two or more ethics review board members.
3	Activity appears to be greater than minimal risk	Full board ethics review
		Completion of full ethics review board application form required.
		Review completed by full ethics review board.