Survival endpoint | Univariable Cox regression model | Adjusted multivariable Cox regression model | p value for 2-way interaction (histological tumor type × nodal status) | |||||
---|---|---|---|---|---|---|---|---|
Hazard ratio | 95% CI | p value | Hazard ratio | 95% CI | p value | |||
DFS | pN0/pN1 | < 0.001 | ||||||
ILC vs. NST | 0.55 | 0.39–0.77 | < 0.001 | 0.60 | 0.42–0.86 | 0.005 | ||
pN2/pN3 | ||||||||
ILC vs. NST | 1.38 | 1.05–1.82 | 0.023 | 1.40 | 1.03–1.91 | 0.033 | ||
OS | pN0/pN1 | 0.005 | ||||||
ILC vs. NST | 0.60 | 0.39– 0.94 | 0.025 | 0.66 | 0.41–1.07 | 0.091 | ||
pN2/pN3 | ||||||||
ILC vs. NST | 1.54 | 1.10–2.15 | 0.011 | 1.60 | 1.09–2.34 | 0.015 | ||
BCSS | pN0/pN1 | 0.008 | ||||||
ILC vs. NST | 0.56 | 0.34–0.93 | 0.024 | 0.70 | 0.41–1.20 | 0.190 | ||
pN2/pN3 | ||||||||
ILC vs. NST | 1.56 | 1.09–2.24 | 0.016 | 1.71 | 1.12–2.59 | 0.012 | ||
DDFS | pN0/pN1 | 0.007 | ||||||
ILC vs. NST | 0.55 | 0.37–0.82 | 0.003 | 0.63 | 0.41–0.95 | 0.029 | ||
pN2/pN3 | ||||||||
ILC vs. NST | 1.21 | 0.87–1.67 | 0.254 | 1.35 | 0.94–1.94 | 0.108 |