Table 2: Absorbing events crude cumulative incidence regression model based on pseudo-values. For each covariate the exponent of regression coefficient is the estimate of the ratio between crude cumulative incidences. N0 and N1 indicates absence or presence of axillary lymph node metastases respectively. T is pathological tumour size (in cm). PgR +,- indicates > 25 or <= 25 femtomoles progesterone receptors per milligram of cytosolic protein respectively, ER +,- indicates >10 fmoli or <= 10 of estrogen receptors femtomoles per milligram of cytosolic protein respectively time and time’ are the spline bases for time.

	Estimate	Standard Error	Wald statistic	p-value
(Intercept)	-4.954	0.666	55.281	< 0.001
time	0.02	0.004	26.545	< 0.001
time'	-0.009	0.005	3.023	0.082
PGR (+ vs. -)	-0.366	0.337	1.181	0.277
ER (+ vs. -)	-0.488	0.408	1.426	0.232
T (1-2 vs. ≤ 1)	-0.274	0.393	0.489	0.484
T (> 2 vs. ≤ 1)	-0.469	0.55	0.725	0.394
N (1 vs. 0)	-0.139	0.36	0.149	0.699
age (51-60 vs. ≤50)	0.658	0.427	2.373	0.123
age (> 60 vs. ≤ 50)	1.576	0.427	13.597	< 0.001