Table 5.

Safety level based on the correlation between $({\mathrm{Im}}_i)$ and $({\mathrm{Ib}}_i)$

Safety measure	Correlation
	Positive	Negative
Less	0.1 to 0.3	− 0.7 to − 1.0
Medium	0.3 to 0.7	− 0.3 to − 0.7
High	0.7 to 1.0	− 0.1 to − 0.3