Table 3.

Multiple logistic regression to assess the association of correct measurement of tumor stage (accordance) with tumor size cT, cN, BMI, age, tumor subtype, grading, histology, Ki67

	Odds ratio	95% Confidence interval	p
Clinical tumor stage cT	1.23	(1.10–1.38)	≤ 0.001
Clinical tumor stage cN (cN0 vs. cN +)	1.02	(0.81–1.27)	0.88
BMI	0.997	(0.977–1.02)	0.78
Age	1.00	(0.997–1.01)	0.26
Tumor subtype			0.007
Luminal A (served as reference category)
Luminal B	0.71	(0.59–0.87)	≤ 0.001
HER2 positive	0.95	(0.54–1.68)	0.86
Triple negative	1.01	(0.68–1.50)	0.97
Grading			0.26
G1 (served as reference category)
G2	1.23	(0.93–1.64)	1.23
G3	1.09	(0.78–1.51)	1.09
Histology
NST (served as reference category)
Invasive lobular	0.96	(0.75–1.21)	0.71
Other	1.09	(0.73–1.64)	0.68
Ki67	1.00	(0.995–1.01)	0.82

All variables were tested in univariable binary logistic regression first