TABLE 1.

H score with additive and multiplicative Quick score systems

Scoring system	Stained malignant cells % (A)*	Intensity (B)	Range
H score1		0 (negative)	0–300
		+1 (mild)
		+2 (moderate)
		+3 (severe)
Additive2 and Multiplicative3 Quick score	1 (0–4%)	0 (negative)	1–9 (additive Q score)
	2 (5–19%)	1 (weak)	0–18 (multiplicative Q score)
	3 (20–39%)	2 (moderate)
	4 (40–59%)	3 (strong)
	5 (60–79%)
	6 (80–100%)

^*In order to compare to the previous qualitative studies, cut off point >5% (A>1) were considered positive

¹H score =((+1 cells %)×1) + ((+2 cells %)×2) + ((+3 cells %)×3)

²Additive Quick score =A+B

³Multiplicative Quick score =A×B