Table 2 Distribution of breast cancer surgical treatment by year of diagnosis and method of detection

From: Mastectomy rates are decreasing in the era of service screening: a population-based study in Italy (1997–2001)

  

Surgical treatment (row %)

 

Number of cases (%)

Conservative

Mastectomy

Not performed

Not reported

Year of diagnosis

 1997

4031

17.3

53.8

39.6

3.5

3.1

 1998

4402

18.9

58.7

36.3

3.1

1.9

 1999

5130

22.0

62.1

33.5

2.5

1.9

 2000

5074

21.8

64.0

31.9

2.7

1.5

 2001

4673

20.0

65.6

30.1

2.6

1.7

 Total

23 310

100.0

61.1

34.1

2.8

2.0

Method of detection

 All invited

9953

42.7

69.9

26.9

1.8

1.4

SD at first test

3910

16.8

75.7

23.1

0.5

0.7

SD at subsequent tests

1987

8.5

83.0

16.0

0.5

0.6

NSD with a previous test

1647

7.1

65.9

31.1

1.8

1.2

NSD never-respondent

2409

10.3

52.5

39.0

5.2

3.3

 Not-yet-invited

13 357

57.3

54.5

39.4

3.6

2.5

  1. NSD=not screen-detected; SD=screen-detected.