Table 3. Multivariate analysis to determine factors associated with OS of patients who underwent re-challenge chemotherapy.

Variate	HR	95% CI	P
Time from first-line treatment to rGC	0.9	0.8 to 1.0	0.016
PS at rGC	3.6	1.4 to 9.1	0.008
Time from first-line treatment to rGC >15 months	0.1	0.0 to 0.5	0.009

Abbreviations as in Table 2.