Table 4. Conditional survival for an additional year among patients segregated based on prognostic factors.

N year since diagnosis*	2nd	3rd	4th	5th	6th
Entire cohort	0.811	0.830	0.875	0.934	0.934
Age at Diagnosis (yr)	P = 0.037	P = 0.103	P = 0.234	P = 0.220	P = 0.044
≤53	0.835	0.840	0.880	0.916	0.935
>53	0.778	0.814	0.868	0.964	0.932
Marital status	P = 0.094	P = 0.050	P = 0.016	P = 0.009	P = 0.017
Married, Single, Unknown	0.816	0.831	0.884	0.939	0.949
Divorced, Separated, Widowed	0.781	0.823	0.820	0.899	0.814
Clinical stage	P < 0.001	P = 0.072	P = 0.207	P = 0.307	P = 0.117
I/II	0.859	0.860	0.892	0.924	0.955
III	0.722	0.788	0.850	0.958	0.932
Unknown	0.812	0.791	0.854	0.935	0.881
Tumor Grade	P = 0.009	P = 0.175	P = 0.131	P = 0.473	P = 0.375
I/II	0.945	0.834	0.974	0.944	0.942
III/IV	0.787	0.820	0.882	1	0.956
Unknown	0.794	0.830	0.855	0.922	0.928

^*The value at year N from diagnosis was the CS for an additional year at year N-1.