Table 2

Distribution of breast cancer cases according to various patient, tumor and surgical unit characteristics, 2002 and 2004, Piedmont Region, Italy
N and% of patients Effect of year
2002 2004 (p value)
Sample size (N) 542 (49.6%) 550 (50.4%)
Age (years)
50–54 134 (24.7%) 124 (22.5%) 0.35
55–59 111 (20.5%) 122 (22.2%)
60–64 166 (30.6%) 151 (27.5%)
65–69 131 (24.2%) 153 (27.8%)
Missing 0 0
Educational level
Bachelor 69 (12.7%) 99 (18.0%) 0.11
Secondary 151 (27.9%) 146 (26.5%)
Professional 222 (40.9%) 197 (35.8%)
Intermediate and primary 85 (15.7%) 88 (16.0%)
None and unknown 15 (2.8%) 20 (3.6%)
Pathological T stage
In Situ 62 (11.4%) 55 (10.0%) 0.54
1mic 10 (1.8%) 15 (2.7%)
1 4 (0.7%) 5 (0.9%)
1a 17 (3.2%) 25 (4.5%)
1b 75 (13.8%) 85 (15.5%)
1c 186 (34.3%) 189 (34.4%)
2 147 (27.2%) 136 (24.7%)
3 5 (0.9%) 10 (1.8%)
4 5 (0.9%) 5 (0.9%)
4a 3 (0.6%) 0 (0%)
4b 18 (3.3%) 15 (2.7%)
4c 1 (0.2%) 0 (0%)
4d 2 (0.4%) 2 (0.4%)
X 4 (0.7%) 2 (0.4%)
Missing 3 (0.6%) 6 (1.1%)
Pathological N stage
0 205 (43.3%) 158 (31.3%) <0.01
Sentinel lymph node 80 (16.9%) 167 (33.1%)
1 21 (4.4%) 37 (7.3%)
1a 20 (4.2%) 72 (14.3%)
1b 7 (1.5%) 3 (0.6%)
1b1 40 (8.4%) 2 (0.4%)
1b2 7 (1.5%) 3 (0.6%)
1b3 56 (11.8%) 3 (0.6%)
1b4 11 (2.3%) 3 (0.6%)
2 15 (3.2%) 25 (5.0%)
3 0 23 (4.6%)
X 9 (1.9%) 6 (1.2%)
Missing 2 (0.4%) 2 (0.4%)
Pathological TNM stage
In situ 65 (12.0%) 56 (10.2%) 0.04
I 189 (34.8%) 233 (42.3%)
II A 127 (23.4%) 112 (20.4%)
II B 75 (13.8%) 53 (9.6%)
III or more 47 (8.8%) 65 (11.9%)
Missing 39 (7.2%) 31 (5.6%)
Grading (invasive only)
Low 58 (12.0%) 82 (16.5%) 0.09
Intermediate 69 (14.4%) 86 (17.4%)
High 103 (21.5%) 89 (18.4%)
Not performed and missing 250 238
Disease detected through regional screening program
Yes 208 (38.4) 236 (42.9%) 0.001
No, symptomatic 209 (38.6%) 171 (31.9%)
No, asymptomatic 110 (20.3%) 112 (20.4%)
Missing 15 (2.8%) 31 (5.6%)
Surgical unit annual case load
< 50 124 (22.9%) 126 (22.9%) 0.001
50–149 249 (45.9%) 250 (45.5%)
≥ 150 155 (28.6%) 147 (26.8%)
Missing 14 (2.6%) 27 (4.8%)

Sacerdote et al.

Sacerdote et al. BMC Health Services Research 2013 13:28   doi:10.1186/1472-6963-13-28

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