Table 1 Summary of data by laterality, radiotherapy status and calendar year of diagnosis

From: Radiation-related mortality from heart disease and lung cancer more than 20 years after radiotherapy for breast cancer

Calendar year of diagnosis

Women

Person-years

Heart disease deaths

Lung cancer deaths

 

Left/right

Left/right

Left/right

Ipsilateral/contralateral

Radiotherapy recorded

1973–82

7109/6615

86 198/81 516

926/624

134/62

1983–92

14 582/13 945

195 017/187 240

844/783

208/155

1993–02

56 094/54 369

475 475/461 071

1160/1155

317/284

2003–08

52 500/51 762

151 899/150 327

187/181

50/44

Total: radiotherapy recorded

130 285/126 691

908 589/880 154

3117/2743

709/545

Mortality ratio

1.08 (1.03–1.14) a

1.30 (1.16–1.45) b

Radiotherapy not recorded

1973–82

25 748/24 101

375 772/355 024

2589/2426

289/266

1983–92

35 314/33 717

445 396/429 779

2651/2361

342/363

1993–02

51 190/49 130

420 979/404 480

1886/1808

268/306

2003–08

42 244/40 451

114 935/110 326

329/302

38/50

Total: radiotherapy not recorded

154 496/147 399

1 357 082/1 299 609

7455/6897

397/985

Mortality ratio

1.02 (0.99–1.06) a

0.97 (0.89–1.06) b

  1. aCardiac mortality ratio, left-sided vs right-sided breast cancer (95% confidence interval)
  2. bLung cancer mortality ratio, ipsilateral vs contralateral (95% confidence interval)