Determining the Appropriateness and Acceptability of a Reduced Postradiotherapy Surveillance Practice in Breast Cancer Patients: Results of a Longitudinal Observational Study

Table 4

Analysis of baseline characteristics for nonattendance—univariate Cox regression analysis.

Univariate Cox regression analysis	Category	value	HR; 95% CI
Age	Below/above mean	0.876	1.00; 0.98–1.02
T-stage	Tis or T1/>T1	0.399	1.17; 0.82–1.67
N-stage	N0/N1 or ≥N2	0.938	0.98; 0.66–1.47
Surgery	BCS/mastectomy	0.950	1.03; 0.46–2.29
Radiotherapy	CFRT/HFRT or IORT	0.072	1.43; 0.97–2.10
Chemotherapy	Yes/no; Adjuvant/neoadjuvant	0.455; 0.897	0.80; 0.44–1.45; 1.04; 0.60–1.78
Hormone receptor	Positive/negative	0.688	0.90; 0.52–1.54
Relevant comorbidities	Yes/no	0.997	1.00; 0.66–1.51
Nationality	German/non-German	0.727	0.85; 0.35–2.09
Employment	Employed/unemployed or retired	0.703	1.08; 0.73–1.60
Familial relationship	In a relationship/single	0.789	0.95; 0.64–1.40
Children	Yes/no	0.220	0.73; 0.44–1.21

BCS, breast-conserving surgery; CFRT, conventionally fractionated radiotherapy; HFRT, hypofractionated radiotherapy; IORT, intraoperative radiotherapy.