Table 3. Current and Revised BWH Staging System T Stages^a.

Current BWH (model A)	Revised BWH (model B)
	T1	T2a	T2b	T3	Total
T1	23	0	0	0	23
T2a	9/10b	21	0	0	31
T2b	0	21/22b	34	0	56
T3	0	0	3/4b	6	10
Total	33	43	38	6	120

Abbreviation: BWH, Brigham and Women’s Hospital.

^a Tumors with complete staging information displayed. No upstaging occurred.

^b Fractions represent the portion of patients with an appropriate downstage, indicating that no poor outcomes occurred.