Table ta1 Trends in the usage of adjuvant therapy by age and nodal status in the Netherlands

From: Trends in the usage of adjuvant systemic therapy for breast cancer in the Netherlands and its effect on mortality

   Breast cancers (N) Breast cancers (N) C (%) H (%) Breast cancers (N) C (%) H (%) Breast cancers (N) C (%) H (%)
Period Stage All ages Age<50 Age <50 Age <50 Age 50–69 Age 50–69 Age 50–69 Age 70+ Age 70+ Age 70+
ECR
 1975–80 N− 657 219 5.5 0.0 305 4.3 2.0 133 1.5 0.0
 1980–84 N− 886 292 1.7 0.0 380 2.1 0.3 214 0.5 2.3
 1985–89 N− 1479 478 1.7 0.2 690 0.6 3.0 311 0.0 7.4
 1990–94 N− 2829 748 2.3 0.4 1,522 0.3 3.0 559 0.0 7.2
 1995–97 N− 1898 486 1.9 0.4 1,027 0.5 1.3 385 0.0 5.7
 1975–80 N+ 617 192 26.6 6.8 318 14.8 7.6 107 4.7 2.8
 1980–84 N+ 741 236 58.1 2.5 353 22.4 12.5 152 5.3 9.9
 1985–89 N+ 1165 381 53.0 7.6 582 11.9 51.2 202 0.5 59.4
 1990–94 N+ 1972 646 60.2 7.7 919 10.8 71.0 407 1.7 80.8
 1995–97 N+ 1220 386 77.7 11.7 562 12.3 77.9 272 0.7 92.7
 1975–80 All 1631 492 15.7 3.3 777 11.1 4.1 362 6.1 1.1
 1980–84 All 1890 574 27.7 1.9 818 14.3 6.6 498 4.0 10.2
 1985–89 All 3157 916 25.0 4.5 1430 7.5 27.4 811 0.7 43.5
 1990–94 All 5580 1488 30.6 5.0 2665 6.4 29.3 1427 1.4 49.8
 1995–97 All 3608 927 36.4 5.7 1751 5.9 32.0 930 1.4 48.9
NE
 1990 All 6093 1692 28.5 3.9 2733 3.4 32.7 1668 1.1 38.3
 1991 All 6520 1828 34.0 3.7 3085 4.7 34.9 1607 1.3 40.3
 1992 All 7021 1886 32.9 3.8 3385 3.1 34.5 1750 0.2 42.1
 1993 All 7325 1962 33.5 4.6 3583 3.1 31.5 1780 0.4 41.9
 1994 All 8973 2436 32.9 4.5 4136 3.9 29.5 2365 0.3 39.6
 1995 All 7844 2169 34.1 3.9 3669 4.0 30.4 2006 0.2 39.8
 1996 All 8190 2347 34.1 3.5 3720 4.3 28.3 2123 0.3 42.8
 1997 All 8275 2316 35.8 3.7 3880 6.4 27.5 2079 0.4 42.1
 1990–94 All 35 932 9804 32.5 4.1 16 922 3.7 32.4 9170 0.6 40.4
 1995–97 All 24 309 6832 34.7 3.7 11 269 4.9 28.7 6208 0.3 41.6
  1. Source: NETB and Eindhoven Cancer Registry. C=chemotherapy, H=hormonal therapy.