Determining the Appropriateness and Acceptability of a Reduced Postradiotherapy Surveillance Practice in Breast Cancer Patients: Results of a Longitudinal Observational Study
Table 1
Patients, tumour, and treatment characteristics of the study population.
Variable
Cohort A (N = 65)
Cohort B (N = 127)
Chi-squaretest value
Age, years
Mean (range)
60.23 (27–82)
58.47 (28–84)
0.353
T-stage, n (%)
T is
3 (4.6)
17 (13.4)
0.038
T 1
43 (66.2)
55 (43.3)
T 2
14 (21.5)
39 (30.7)
T 3
3 (4.6)
12 (9.4)
T 4
2 (3.1)
4 (3.1)
N-stage, n (%)
N 0
47 (72.3)
88 (69.3)
0.877
N 1
14 (21.5)
29 (22.8)
≥N 2
4 (6.2)
10 (7.9)
Surgery, n (%)
BCS
61 (93.8)
109 (85.8)
0.099
Mastectomy
4 (6.2)
18 (14.2)
Radiotherapy, n (%)
CFRT
43 (66.2)
101 (79.5)
0.003
HFRT
17 (26.2)
26 (20.5)
0.171
IORT
5 (7.7)
0 (0.0)
Chemotherapy, n (%)
Neoadjuvant
7 (10.8)
18 (14.2)
0.049
Adjuvant
56 (86.2)
92 (72.4)
No
2 (3.1)
17 (13.4)
Hormone receptor, n (%)
Positive
50 (76.9)
107 (84.3)
0.458
Negative
11 (16.9)
15 (11.8)
No information
4 (6.2)
5 (3.9)
Relevant comorbidities, n (%)
Yes
19 (29.2)
39 (30.7)
0.833
No
46 (70.8)
88 (69.3)
Nationality, n (%)
German
61 (93.8)
110 (86.6)
0.222
Non-German
1 (1.5)
9 (7.1)
No information
3 (4.6)
8 (6.3)
Employment, n (%)
Employed
22 (33.8)
62 (48.8)
0.091
Unemployed
5 (7.7)
15 (11.8)
Retired
19 (29.2)
27 (21.3)
No information
19 (29.2)
23 (18.1)
Familial relationship, n (%)
In a relationship
44 (67.7)
78 (61.4)
0.679
Single
18 (27.7)
41 (32.3)
No information
3 (4.6)
8 (6.3)
Children, n (%)
Yes
38 (58.5)
75 (59.1)
0.545
No
9 (13.8)
24 (18.9)
No information
18 (27.7)
28 (22.0)
BCS, breast-conserving surgery; CFRT, conventionally fractionated radiotherapy; HFRT, hypofractionated radiotherapy; IORT, intraoperative radiotherapy; N and n, number of patients; after exclusion of the patients with IORT due to statistical imbalance. Bold values represent statistically significant values.
