The outcome and prognostic factors for lymph node recurrence after node-sparing definitive external beam radiotherapy for localized prostate cancer

Table 3 Univariate and multivariate analyses of the prognostic factors on overall survival after lymph node recurrence

	2-year survival rate (%)	p value	HR (95 % CI)	p value
Age
≥70	41	0.160
v<70	80
T stage
T3–T4	37	0.236
T1–T2	100
Gleason score
8–10	47	0.661
≤7	63
PSA (ng/ml)
≥20	50	0.762
<20	58
Isolated lymph node recurrence
Yes	67	0.003	5.22 (0.50–55.03)	0.169
No	0
PSA doubling time
>5 months	89	0.009	1.869 (0.05–74.19)	0.739
<5 months	17
PSA nadir-free interval
>12 months	80	0.035	1.203 (0.09–15.62)	0.888
<12 months	20
PSA at lymph node recurrence (ng/ml)
>10	19	0.003	510,993 (0–1.22E184)	0.950
<10	100

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