Table 1.

Risk measure using the LISA classification.

α1	β1	ϒ1 (×2)	Punctuation
L	L	L	4
H	L	L	5
L	H	L	5
L	L	H	6 *
H	H	L	6 *
H	L	H	7 *
L	H	H	7 *
H	H	H	8 *

Weights for the final LISA classification. For α₁ and β₁, we assigned 1 when the LISA classification indicated low risk (L) and 2 if LISA indicated high risk (H). Since ϒ₁ comprises α₁ and β₁, we assigned 2 for L and 4 for H. The final risk classification was indicated by values equal to or greater than 6 (values marked with an asterisk).