Table 3. Factors associated with non-compliance in the pre-surgery group (N=692).

			Univariate analysis	Multivariate analysis
	Compliant decisions N=652, N (%)	Non-compliant decisions N=40, N (%)	P-value	OR (95% CI)	P-value
Age at diagnosis, years			<0.0001
⩽35	28 (90.3)	3 (9.7)		2.8 (0.8–9.9)	0.1
35–80	573 (96.3)	22 (3.7)		1
⩾80	51 (77.3)	15 (22.7)		7.7 (3.7–15.7)	<0.0001
Postmenopausal status			0.5
No	234 (95.1)	12 (4.9)
Yes	406 (93.6)	28 (6.4)
Tumour size, mm			0.3
⩽20	320 (95.5)	15 (4.5)
20–40	202 (92.7)	16 (7.3)
⩾40	130 (93.5)	9 (6.5)
Multifocal tumour			0.3
No	534 (93.7)	36 (6.3)
Yes	118 (96.7)	4 (3.3)
Microinvasive tumour			1.0
No	637 (94.1)	40 (5.9)
Yes	15 (100.0)	0 (0.0)
Prior neoadjuvant treatment			0.08
No	597 (94.8)	33 (5.2)
Yes	55 (88.7)	7 (11.3)
Contraindications to surgery			0.4
No	620 (94.4)	37 (5.6)
Yes	32 (91.4)	3 (8.6)
Frequent patient profile			0.03
No	117 (90.0)	13 (10.0)
Yes	535 (95.2)	27 (4.8)

Abbreviations: CI=confidence interval; OR=odds ratio.

Twelve missing data for postmenopausal status in compliant decisions. Fisher's exact test used for categorical variables in the univariate analysis. Variables with P<0.20 in the univariate analysis (age at diagnosis, prior neoadjuvant treatment, and frequent patient profile) entered the multivariate analysis.