Human epidermal growth factor receptor 2 expression level and combined positive score can evaluate efficacy of advanced gastric cancer

Table 2 Best overall response (patients with measurable lesions)

	Group A (N = 42)		Group B (N = 21)		P value
	n (%)	95%CI	n (%)	95%CI
Best overall response
Complete response (CR)	0	-	0	-	-
Partial response (PR)	30 (71.4)	-	9 (42.9)	-	-
Stable disease (SD)	12 (28.6)	-	10 (47.6)	-	-
Progressive disease	0 (0)	-	2 (9.5)	-	-
Overall response rate (CR + PR)	30 (71.4)	55.4-84.3	9 (42.9)	21.8-66.0	0.03
Disease control rate (CR + PR + SD)	42 (100)	91.6-1.00	19 (90.5)	69.6-98.8	2.527e-13

N: The total number of subjects in the treatment group. It is the denominator for percentage (%) calculation. n: Number of subjects who are at the corresponding category. The exact 95%CI for the frequency distribution of each variable were computed using Clopper and Pearson method.