Table4.

Cox Proportional Hazards Model for Overall Survival in Patients With Ovarian Cancer With Instrumental Social Attachment Adjusted for Covariates

Variable	HR	95% CI	P
Age at cancer diagnosis	1.04	1.02 to 1.07	.001
High grade v low grade	1.31	0.34 to 5.01	.760
Advanced stage v early stage	8.88	2.08 to 37.88	.003
Serous histology v nonserous	0.67	0.32 to 1.41	.290
Suboptimal residual disease v optimal	1.68	0.99 to 2.84	.053
Instrumental social support at cancer diagnosis*	0.94	0.83 to 1.06	.310

^*Instrumental social support score is used as a continuous variable; thus, hazard ratio (HR) is expressed per one unit increase in instrumental social support score. In multivariate analyses, n = 166 because of two patients who could not be staged.