Table 1.

Number of axillary dissections performed per surgeon before and after adoption of Z11.

Surgeon	Pre-Z11(52 mo)	Post-Z11 (34 mo)	Overall (86 mo)	P value	Applied Z11 (34 mo)
Surgeon 1*	199 (71.3%)	70 (36.6%)	269 (57.2%)	<0.001	27 (50.9%)
Surgeon 2†	67 (24.0%)	27 (14.1%)	94 (20.0%)		9 (17.0%)
Surgeon 3‡	13 (4.7%)	86 (45.0%)	99 (21.1%)		17 (32.1%)
Surgeon 4§	N/A	8 (4.2%)	8 (1.70%)		0
Total	279	191	470		53

^*This surgeon left the faculty in July 2013.

^†This surgeon was a member of the faculty for the entire duration of this study, despite being assumed a part-time role during the study.

^‡This surgeon joined the faculty in October 2010 and currently works at RPCI.

^§This surgeon joined the faculty in July 2013 and currently works at RPCI.