Table 1.

HER2 status in patients with available HER2 testing results between 2007 and 2013

N	Positive	Negative	Total
	559	1308	1867
HER2 status with 95% CI	29.9% (27.9–32.0%)	70.1% (68.0–72.1%)	100%
Per site distribution: n (%)
King Faisal Specialist Hospital and Research Center Gen. Org. (Jeddah)	210 (29.1%)	511 (70.9%)	721 (100%)
King Abdullah International Medical Research Center [KAIMRC]—King Abdulaziz Medical City (Riyadh)	237 (31.1%)	526 (68.9%)	763 (100%)
King Fahad Specialist Hospital (Dammam)	112 (29.2%)	271 (70.8%)	383 (100%)

CI confidence interval