Table 1.

Distribution of the percentages of involved nodes and corresponding unadjusted mortality

Percentage of involved nodes (np/nx [%])	Number of patients at risk	All-cause mortality (%)	Breast cancer mortality (%)	Non-breast-cancer mortality (%)
0	58070	15.9	5.2	10.7
1–10	8695	21.6	11.7	9.9
11–20	6350	26.3	15.7	10.6
21–30	3003	30.8	19.9	10.9
32–40	2055	33.1	22.7	10.4
41–50	1487	41.0	29.6	11.4
51–60	889	37.8	28.2	9.6
61–70	719	47.0	33.7	13.4
71–80	717	50.3	40.3	10.0
81–90	658	52.6	40.4	12.2
91–100	1043	58.6	45.2	13.4

np, number of pathologically involved axillary lymph nodes; nx, number of axillary lymph nodes examined (excised).